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 <title>iMechanica - Sir Isaac Newton, FRS (4 January 1643 – 31 March 1727) - Comments</title>
 <link>http://imechanica.org/node/116</link>
 <description>Comments for &quot;Sir Isaac Newton, FRS (4 January 1643 – 31 March 1727)&quot;</description>
 <language>en</language>
<item>
 <title>Madrid Madrid and the Codex Atlanticus --free digital e-Leo.</title>
 <link>http://imechanica.org/node/116#comment-7666</link>
 <description>&lt;p&gt;&lt;/p&gt;
&lt;p&gt;
The tiny brick library in Leonardo Da Vinci&amp;#39;s hometown is putting 3,000 pages&lt;br /&gt;
of the genius&amp;#39; work online in a high-resolution, searchable archive.
&lt;/p&gt;
&lt;p&gt;
&lt;font size=&quot;4&quot;&gt;The Leonardian Library in Vinci, Tuscany, is making the &lt;cite&gt;Madrid&lt;br /&gt;
Codices&lt;/cite&gt; and the &lt;cite&gt;Codex Atlanticus&lt;/cite&gt; -- two collections of&lt;br /&gt;
scientific and technical drawings -- available as a free digital archive called&lt;br /&gt;
&lt;a href=&quot;http://www.leonardodigitale.com/&quot;&gt;e-Leo&lt;/a&gt;.&lt;/font&gt;
&lt;/p&gt;
&lt;p&gt;
The EU-financed project will also digitize the Windsor folios and 12&lt;br /&gt;
notebooks from the Institut de France for a total of 12,000 pages, creating the&lt;br /&gt;
most extensive public online archive of &lt;a href=&quot;http://www.museoscienza.org/english/leonardo/manoscritti.asp&quot;&gt;Leonardo&amp;#39;s&lt;br /&gt;
codes&lt;/a&gt;.
&lt;/p&gt;
&lt;p&gt;
It&amp;#39;s a powerful resource for amateurs --- Renaissance groupies, crowdsourcers&lt;br /&gt;
looking for technical solutions -- who make half of all requests to the library&lt;br /&gt;
in the hamlet where Leonardo was born.
&lt;/p&gt;
&lt;p&gt;
E-Leo won&amp;#39;t be putting lone librarian Monica Taddei out of a job anytime&lt;br /&gt;
soon, though.
&lt;/p&gt;
&lt;p&gt;
Taddei often navigates the texts for experts in technical fields looking for&lt;br /&gt;
sketches of things like valves or siphons. The &lt;cite&gt;Madrid Codices&lt;/cite&gt; are&lt;br /&gt;
especially fertile for designs.
&lt;/p&gt;
&lt;p&gt;
Alas, e-Leo is not quite ready for Dan Brown buffs or 8th-grade homework&lt;br /&gt;
assignments.
&lt;/p&gt;
&lt;p&gt;
While the digital notebooks offer advantages to make academics sob with joy&lt;br /&gt;
-- semantic search functions, clustered results -- most of them vanish without a&lt;br /&gt;
working knowledge of 15th-century Italian. (Forms in English are expected in&lt;br /&gt;
about two months; an index of drawings in English is expected by year&amp;#39;s end.)
&lt;/p&gt;
&lt;p&gt;
To index Leonardo&amp;#39;s designs and irregular vocabulary, text-mining company&lt;br /&gt;
Synthema teamed up with engineers from the University of Florence and the&lt;br /&gt;
Accademia della Crusca, Italy&amp;#39;s national language institute founded in 1582.
&lt;/p&gt;
&lt;p&gt;
&amp;quot;Leonardo had a very modern way of jumbling things together, a true&lt;br /&gt;
multitasker,&amp;quot; says Federico Neri, head of R&amp;amp;D at Synthema. &amp;quot;There are&lt;br /&gt;
technical specifications next to shopping lists. Finding anything used to be&lt;br /&gt;
mining in a literal sense.&amp;quot; Neri hopes to eventually develop a multilanguage&lt;br /&gt;
version to help readers explore the notebooks.
&lt;/p&gt;
&lt;p&gt;
Nonetheless, there are plenty of curiosities for the lay reader.
&lt;/p&gt;
&lt;p&gt;
Even a quick spin may turn up, as it did on a recent once-over of the&lt;br /&gt;
&lt;cite&gt;Codex Atlanticus&lt;/cite&gt;, the spring-propelled vehicle thought to be a&lt;br /&gt;
precursor to &lt;a href=&quot;http://www.abc.net.au/science/news/stories/s1094767.htm&quot;&gt;Mars rovers&lt;/a&gt;.&lt;br /&gt;
And the high-resolution images are arguably as close as one will get to the real&lt;br /&gt;
thing unless you&amp;#39;re &lt;a href=&quot;http://en.wikipedia.org/wiki/Codex_Leicester&quot;&gt;Bill&lt;br /&gt;
Gates&lt;/a&gt;.
&lt;/p&gt;
&lt;p&gt;
There are references to a sketch in the &lt;cite&gt;Codex Atlanticus&lt;/cite&gt; showing&lt;br /&gt;
the backside of Leonardo&amp;#39;s comely assistant, &lt;a href=&quot;http://en.wikipedia.org/wiki/Image:Leonardo_Salai.JPG&quot;&gt;Salaino&lt;/a&gt;, with&lt;br /&gt;
penises speeding at him. When an e-Leo user&amp;#39;s attempts to find it fail, Taddei&lt;br /&gt;
recites a folio number from memory with the cool aplomb of a professional used&lt;br /&gt;
to stewarding odd requests.
&lt;/p&gt;
&lt;p&gt;
Punching it in brings up a crude drawing in a childish hand, clearly not&lt;br /&gt;
Leonardo&amp;#39;s.
&lt;/p&gt;
&lt;p&gt;
&amp;quot;I&amp;#39;m afraid that&amp;#39;s the one, though it&amp;#39;s not what you&amp;#39;d expect,&amp;quot; Taddei says.&lt;br /&gt;
&amp;quot;Hang on though.&amp;quot;
&lt;/p&gt;
&lt;p&gt;
The librarian taps in some more numbers then goes off to check a reference in&lt;br /&gt;
a book.
&lt;/p&gt;
&lt;p&gt;
&amp;quot;Here&amp;#39;s what you want: Try 674r.&amp;quot;
&lt;/p&gt;
&lt;p&gt;
The image takes a few seconds to load, but at the center of the page is a&lt;br /&gt;
small, anatomical sketch of a young man&amp;#39;s privates and a peachy bum.
&lt;/p&gt;
&lt;p&gt;
Worth the effort after all.
&lt;/p&gt;
&lt;p&gt;
&amp;nbsp;
&lt;/p&gt;
&lt;br class=&quot;clear&quot; /&gt;</description>
 <pubDate>Tue, 03 Jun 2008 23:52:51 -0400</pubDate>
 <dc:creator>Mike Ciavarella</dc:creator>
 <guid isPermaLink="false">comment 7666 at http://imechanica.org</guid>
</item>
<item>
 <title>Even greater: Leonardo da Vinci</title>
 <link>http://imechanica.org/node/116#comment-7663</link>
 <description>&lt;p&gt;
&amp;nbsp;
&lt;/p&gt;
&lt;p&gt;Leonardo da Vinci&lt;br /&gt;
From Wikipedia, the free encyclopedia&lt;/p&gt;
&lt;p&gt;&amp;bull;&amp;nbsp;&lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Wikipedia:Basic_navigation&quot; title=&quot;Basic navigation&quot;&gt;Find&amp;nbsp;out&amp;nbsp;more&amp;nbsp;about&amp;nbsp;navigating&amp;nbsp;Wikipedia&amp;nbsp;and&amp;nbsp;finding&amp;nbsp;information&lt;/a&gt;&lt;/em&gt;&amp;nbsp;&amp;bull;&lt;/p&gt;
&lt;p&gt;Jump to: &lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#column-one&quot;&gt;navigation&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#searchInput&quot;&gt;search&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&amp;quot;Da Vinci&amp;quot; redirects here. For other uses, see &lt;a href=&quot;http://en.wikipedia.org/wiki/Da_Vinci_%28disambiguation%29&quot; title=&quot;Da Vinci (disambiguation)&quot;&gt;Da Vinci (disambiguation)&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Leonardo da Vinci&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;			&lt;a href=&quot;http://en.wikipedia.org/wiki/Image:Leonardo_self.jpg&quot; title=&quot;Leonardo self.jpg&quot; class=&quot;image&quot;&gt;&lt;img src=&quot;http://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Leonardo_self.jpg/200px-Leonardo_self.jpg&quot; border=&quot;0&quot; alt=&quot;&quot; width=&quot;379&quot; height=&quot;595&quot; /&gt;&lt;/a&gt;&lt;br /&gt;
			Self-portrait in red chalk, circa 1512 to 1515. &lt;span class=&quot;reference&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#endnote_anone&quot;&gt;[a]&lt;/a&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Birth name&lt;/strong&gt;&lt;br /&gt;
			Leonardo di Ser Piero&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Born&lt;/strong&gt;&lt;br /&gt;
			&lt;a href=&quot;http://en.wikipedia.org/wiki/April_15&quot; title=&quot;April 15&quot;&gt;April 15&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/1452&quot; title=&quot;1452&quot;&gt;1452&lt;/a&gt;&lt;span&gt;(&lt;span class=&quot;bday&quot;&gt;1452-04-15&lt;/span&gt;)&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;
			&lt;a href=&quot;http://en.wikipedia.org/wiki/Vinci%2C_Italy&quot; title=&quot;Vinci, Italy&quot;&gt;Vinci&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Province_of_Florence&quot; title=&quot;Province of Florence&quot;&gt;Florence&lt;/a&gt;, in present-day &lt;a href=&quot;http://en.wikipedia.org/wiki/Italy&quot; title=&quot;Italy&quot;&gt;Italy&lt;/a&gt;
			&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Died&lt;/strong&gt;&lt;br /&gt;
			&lt;a href=&quot;http://en.wikipedia.org/wiki/May_2&quot; title=&quot;May 2&quot;&gt;May 2&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/1519&quot; title=&quot;1519&quot;&gt;1519&lt;/a&gt; (aged&amp;nbsp;67)&lt;br /&gt;
			&lt;a href=&quot;http://en.wikipedia.org/wiki/Amboise&quot; title=&quot;Amboise&quot;&gt;Amboise&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Indre-et-Loire&quot; title=&quot;Indre-et-Loire&quot;&gt;Indre-et-Loire&lt;/a&gt;, in present-day &lt;a href=&quot;http://en.wikipedia.org/wiki/France&quot; title=&quot;France&quot;&gt;France&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Nationality&lt;/strong&gt;&lt;br /&gt;
			&lt;a href=&quot;http://en.wikipedia.org/wiki/Italy&quot; title=&quot;Italy&quot;&gt;Italian&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Field&lt;/strong&gt;&lt;br /&gt;
			Many and diverse fields of &lt;a href=&quot;http://en.wikipedia.org/wiki/Arts&quot; title=&quot;Arts&quot; class=&quot;mw-redirect&quot;&gt;arts&lt;/a&gt; and &lt;a href=&quot;http://en.wikipedia.org/wiki/Sciences&quot; title=&quot;Sciences&quot; class=&quot;mw-redirect&quot;&gt;sciences&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Movement&lt;/strong&gt;&lt;br /&gt;
			&lt;span class=&quot;role&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/High_Renaissance&quot; title=&quot;High Renaissance&quot;&gt;High Renaissance&lt;/a&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;			&lt;strong&gt;Works&lt;/strong&gt;&lt;br /&gt;
			&lt;span class=&quot;note&quot;&gt;&lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Mona_Lisa&quot; title=&quot;Mona Lisa&quot;&gt;Mona Lisa&lt;/a&gt;&lt;/em&gt;, &lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/The_Last_Supper_%28Leonardo%29&quot; title=&quot;The Last Supper (Leonardo)&quot;&gt;The Last Supper&lt;/a&gt;&lt;/em&gt;, &lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Vitruvian_Man&quot; title=&quot;Vitruvian Man&quot;&gt;The Vitruvian Man&lt;/a&gt;&lt;/em&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;
&lt;strong&gt;Leonardo di ser Piero da Vinci&lt;/strong&gt; (&lt;span class=&quot;unicode audiolink&quot;&gt;&lt;a href=&quot;http://upload.wikimedia.org/wikipedia/commons/8/89/It-Leonardo_di_ser_Piero_da_Vinci.ogg&quot; title=&quot;It-Leonardo di ser Piero da Vinci.ogg&quot; class=&quot;internal&quot;&gt;pronunciation&lt;/a&gt;&lt;/span&gt;&amp;nbsp;&lt;span class=&quot;metadata audiolinkinfo&quot;&gt;(&lt;a href=&quot;http://en.wikipedia.org/wiki/Wikipedia:Media_help&quot; title=&quot;Media help&quot;&gt;help&lt;/a&gt;&amp;middot;&lt;a href=&quot;http://en.wikipedia.org/wiki/Image:It-Leonardo_di_ser_Piero_da_Vinci.ogg&quot; title=&quot;It-Leonardo di ser Piero da Vinci.ogg&quot;&gt;info&lt;/a&gt;)&lt;/span&gt;), &lt;a href=&quot;http://en.wikipedia.org/wiki/April_15&quot; title=&quot;April 15&quot;&gt;April 15&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/1452&quot; title=&quot;1452&quot;&gt;1452&lt;/a&gt; &amp;ndash; &lt;a href=&quot;http://en.wikipedia.org/wiki/May_2&quot; title=&quot;May 2&quot;&gt;May 2&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/1519&quot; title=&quot;1519&quot;&gt;1519&lt;/a&gt;) was an &lt;a href=&quot;http://en.wikipedia.org/wiki/Italy&quot; title=&quot;Italy&quot;&gt;Italian&lt;/a&gt; &lt;a href=&quot;http://en.wikipedia.org/wiki/Polymath&quot; title=&quot;Polymath&quot;&gt;polymath&lt;/a&gt;; a &lt;a href=&quot;http://en.wikipedia.org/wiki/Scientist&quot; title=&quot;Scientist&quot;&gt;scientist&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Mathematician&quot; title=&quot;Mathematician&quot;&gt;mathematician&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Engineer&quot; title=&quot;Engineer&quot;&gt;engineer&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Inventor&quot; title=&quot;Inventor&quot;&gt;inventor&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Anatomist&quot; title=&quot;Anatomist&quot; class=&quot;mw-redirect&quot;&gt;anatomist&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Painter&quot; title=&quot;Painter&quot; class=&quot;mw-redirect&quot;&gt;painter&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Sculptor&quot; title=&quot;Sculptor&quot; class=&quot;mw-redirect&quot;&gt;sculptor&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Architect&quot; title=&quot;Architect&quot;&gt;architect&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Botanist&quot; title=&quot;Botanist&quot; class=&quot;mw-redirect&quot;&gt;botanist&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Musician&quot; title=&quot;Musician&quot;&gt;musician&lt;/a&gt; and &lt;a href=&quot;http://en.wikipedia.org/wiki/Writer&quot; title=&quot;Writer&quot;&gt;writer&lt;/a&gt;. Born as the illegitimate son of a notary, Piero da Vinci, and a peasant girl, Caterina, at &lt;a href=&quot;http://en.wikipedia.org/wiki/Vinci%2C_Italy&quot; title=&quot;Vinci, Italy&quot;&gt;Vinci&lt;/a&gt; in the region of &lt;a href=&quot;http://en.wikipedia.org/wiki/Florence&quot; title=&quot;Florence&quot;&gt;Florence&lt;/a&gt;, Leonardo was educated in the studio of the renowned Florentine painter, &lt;a href=&quot;http://en.wikipedia.org/wiki/Verrocchio&quot; title=&quot;Verrocchio&quot; class=&quot;mw-redirect&quot;&gt;Verrocchio&lt;/a&gt;. Much of his earlier working life was spent in the service of &lt;a href=&quot;http://en.wikipedia.org/wiki/Ludovico_il_Moro&quot; title=&quot;Ludovico il Moro&quot; class=&quot;mw-redirect&quot;&gt;Ludovico il Moro&lt;/a&gt; in &lt;a href=&quot;http://en.wikipedia.org/wiki/Milan&quot; title=&quot;Milan&quot;&gt;Milan&lt;/a&gt;. He later worked in &lt;a href=&quot;http://en.wikipedia.org/wiki/Rome&quot; title=&quot;Rome&quot;&gt;Rome&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Bologna&quot; title=&quot;Bologna&quot;&gt;Bologna&lt;/a&gt; and &lt;a href=&quot;http://en.wikipedia.org/wiki/Venice&quot; title=&quot;Venice&quot;&gt;Venice&lt;/a&gt;, spending his final years in France at the home given to him by King &lt;a href=&quot;http://en.wikipedia.org/wiki/Fran%C3%A7ois_I_of_France&quot; title=&quot;François I of France&quot; class=&quot;mw-redirect&quot;&gt;Fran&amp;ccedil;ois I&lt;/a&gt;.
&lt;/p&gt;
&lt;p&gt;
Leonardo has often been described as the &lt;a href=&quot;http://en.wikipedia.org/wiki/Archetype&quot; title=&quot;Archetype&quot;&gt;archetype&lt;/a&gt; of the &amp;quot;&lt;a href=&quot;http://en.wikipedia.org/wiki/Polymath&quot; title=&quot;Polymath&quot;&gt;Renaissance man&lt;/a&gt;&amp;quot;, a man whose seemingly infinite curiosity was equalled only by his powers of invention.&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#cite_note-HG-0&quot;&gt;[1]&lt;/a&gt; He is widely considered to be one of the greatest &lt;a href=&quot;http://en.wikipedia.org/wiki/Painter&quot; title=&quot;Painter&quot; class=&quot;mw-redirect&quot;&gt;painters&lt;/a&gt; of all time and perhaps the most diversely talented person ever to have lived.&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#cite_note-1&quot;&gt;[2]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
It is primarily as a painter that Leonardo was and is renowned. Two of his works, the &lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Mona_Lisa&quot; title=&quot;Mona Lisa&quot;&gt;Mona Lisa&lt;/a&gt;&lt;/em&gt; and &lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/The_Last_Supper_%28Leonardo%29&quot; title=&quot;The Last Supper (Leonardo)&quot;&gt;The Last Supper&lt;/a&gt;&lt;/em&gt;&lt;br /&gt;
occupy unique positions as the most famous, most reproduced and most&lt;br /&gt;
parodied portrait and religious painting of all time, their fame&lt;br /&gt;
approached only by &lt;a href=&quot;http://en.wikipedia.org/wiki/Michelangelo&quot; title=&quot;Michelangelo&quot;&gt;Michelangelo&lt;/a&gt;&amp;#39;s &lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Creation_of_Adam&quot; title=&quot;Creation of Adam&quot; class=&quot;mw-redirect&quot;&gt;Creation of Adam&lt;/a&gt;&lt;/em&gt;.&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#cite_note-HG-0&quot;&gt;[1]&lt;/a&gt; Leonardo&amp;#39;s drawing of the &lt;em&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Vitruvian_Man&quot; title=&quot;Vitruvian Man&quot;&gt;Vitruvian Man&lt;/a&gt;&lt;/em&gt;&lt;br /&gt;
is also iconic. Perhaps fifteen of his paintings survive, the small&lt;br /&gt;
number due to his constant, and frequently disastrous, experimentation&lt;br /&gt;
with new techniques, and his chronic procrastination.&lt;span class=&quot;reference&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#endnote_bnone&quot;&gt;[b]&lt;/a&gt;&lt;/span&gt;&lt;br /&gt;
Nevertheless, these few works together with his notebooks, which&lt;br /&gt;
contain drawings, scientific diagrams, and his thoughts on the nature&lt;br /&gt;
of painting, comprise a contribution to later generations of artists&lt;br /&gt;
only rivalled by that of his contemporary, &lt;a href=&quot;http://en.wikipedia.org/wiki/Michelangelo&quot; title=&quot;Michelangelo&quot;&gt;Michelangelo&lt;/a&gt;.
&lt;/p&gt;
&lt;p&gt;
As an engineer, Leonardo&amp;#39;s ideas were vastly ahead of his time. He conceptualised a helicopter, a tank, concentrated &lt;a href=&quot;http://en.wikipedia.org/wiki/Solar_energy&quot; title=&quot;Solar energy&quot;&gt;solar power&lt;/a&gt;, a calculator, the &lt;a href=&quot;http://en.wikipedia.org/wiki/Double_hull&quot; title=&quot;Double hull&quot;&gt;double hull&lt;/a&gt; and outlined a rudimentary theory of &lt;a href=&quot;http://en.wikipedia.org/wiki/Plate_tectonics&quot; title=&quot;Plate tectonics&quot;&gt;plate tectonics&lt;/a&gt;. Relatively few of his designs were constructed or were even feasible during his lifetime,&lt;span class=&quot;reference&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#endnote_cnone&quot;&gt;[c]&lt;/a&gt;&lt;/span&gt; but some of his smaller inventions, such as an automated &lt;a href=&quot;http://en.wikipedia.org/wiki/Bobbin&quot; title=&quot;Bobbin&quot;&gt;bobbin&lt;/a&gt; winder and a machine for testing the &lt;a href=&quot;http://en.wikipedia.org/wiki/Tensile_strength&quot; title=&quot;Tensile strength&quot;&gt;tensile strength&lt;/a&gt; of wire, entered the world of manufacturing unheralded.&lt;span class=&quot;reference&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#endnote_dnone&quot;&gt;[d]&lt;/a&gt;&lt;/span&gt; As a scientist, he greatly advanced the state of knowledge in the fields of &lt;a href=&quot;http://en.wikipedia.org/wiki/Anatomy&quot; title=&quot;Anatomy&quot;&gt;anatomy&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Civil_engineering&quot; title=&quot;Civil engineering&quot;&gt;civil engineering&lt;/a&gt;, &lt;a href=&quot;http://en.wikipedia.org/wiki/Optics&quot; title=&quot;Optics&quot;&gt;optics&lt;/a&gt;, and &lt;a href=&quot;http://en.wikipedia.org/wiki/Hydrodynamics&quot; title=&quot;Hydrodynamics&quot; class=&quot;mw-redirect&quot;&gt;hydrodynamics&lt;/a&gt;.
&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;br /&gt;
&lt;span class=&quot;mw-headline&quot;&gt;Leonardo as observer, scientist and&lt;br /&gt;
inventor&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Da_Vinci_Vitruve_Luc_Viatour.jpg&quot; title=&quot;The Vitruvian Man (c. 1485) Accademia, Venice&quot; class=&quot;image&quot;&gt;&lt;img class=&quot;thumbimage&quot; src=&quot;http://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Da_Vinci_Vitruve_Luc_Viatour.jpg/180px-Da_Vinci_Vitruve_Luc_Viatour.jpg&quot; border=&quot;0&quot; alt=&quot;The Vitruvian Man (c. 1485) Accademia, Venice&quot; width=&quot;393&quot; height=&quot;534&quot; /&gt;&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Da_Vinci_Vitruve_Luc_Viatour.jpg&quot; title=&quot;Enlarge&quot; class=&quot;internal&quot;&gt;&lt;img src=&quot;/skins-1.5/common/images/magnify-clip.png&quot; alt=&quot;&quot; width=&quot;15&quot; height=&quot;11&quot; /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;The &lt;em&gt;&lt;a href=&quot;/wiki/Vitruvian_Man&quot; title=&quot;Vitruvian Man&quot;&gt;Vitruvian Man&lt;/a&gt;&lt;/em&gt; (c. 1485)&lt;br /&gt;
&lt;a href=&quot;/wiki/Accademia%2C_Venice&quot; title=&quot;Accademia, Venice&quot; class=&quot;mw-redirect&quot;&gt;Accademia, Venice&lt;/a&gt;&lt;/p&gt;
&lt;dl&gt;
&lt;dd&gt;
&lt;p&gt;&lt;em&gt;Main article: &lt;a href=&quot;/wiki/Leonardo_da_Vinci_-_scientist_and_inventor&quot; title=&quot;Leonardo da Vinci - scientist and inventor&quot;&gt;Leonardo da Vinci -&lt;br /&gt;
scientist and inventor&lt;/a&gt;&lt;/em&gt;&lt;/p&gt;
&lt;/dd&gt;
&lt;/dl&gt;
&lt;p&gt;
&lt;a id=&quot;Journals&quot; name=&quot;Journals&quot; title=&quot;Journals&quot;&gt;&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;&lt;span class=&quot;mw-headline&quot;&gt;Journals&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;
&lt;a href=&quot;/wiki/Renaissance_humanism&quot; title=&quot;Renaissance humanism&quot;&gt;Renaissance&lt;br /&gt;
humanism&lt;/a&gt; saw no mutually exclusive polarities between the sciences and the&lt;br /&gt;
arts, and Leonardo&amp;#39;s studies in science and engineering are as impressive and&lt;br /&gt;
innovative as his artistic work, recorded in notebooks comprising some 13,000&lt;br /&gt;
pages of notes and drawings, which fuse art and &lt;a href=&quot;/wiki/Natural_philosophy&quot; title=&quot;Natural philosophy&quot;&gt;natural philosophy&lt;/a&gt; (the forerunner of modern&lt;br /&gt;
science). These notes were made and maintained daily throughout Leonardo&amp;#39;s life&lt;br /&gt;
and travels, as he made continual observations of the world around him.&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
The journals are mostly written in mirror-image cursive. The reason may have&lt;br /&gt;
been more a practical expediency than for reasons of secrecy as is often&lt;br /&gt;
suggested. Since Leonardo wrote with his left hand, it is probable that it was&lt;br /&gt;
easier for him to write from right to left.&lt;span class=&quot;reference&quot;&gt;&lt;a href=&quot;#endnote_vnone&quot;&gt;[v]&lt;/a&gt;&lt;/span&gt;
&lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Da_Vinci_Studies_of_Embryos_Luc_Viatour.jpg&quot; title=&quot;A page from Leonardo&amp;#039;s journal showing his study of a foetus in the womb (c. 1510) Royal Library, Windsor Castle&quot; class=&quot;image&quot;&gt;&lt;img class=&quot;thumbimage&quot; src=&quot;http://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Da_Vinci_Studies_of_Embryos_Luc_Viatour.jpg/180px-Da_Vinci_Studies_of_Embryos_Luc_Viatour.jpg&quot; border=&quot;0&quot; alt=&quot;A page from Leonardo&amp;#039;s journal showing his study of a foetus in the womb (c. 1510) Royal Library, Windsor Castle&quot; width=&quot;395&quot; height=&quot;581&quot; /&gt;&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Da_Vinci_Studies_of_Embryos_Luc_Viatour.jpg&quot; title=&quot;Enlarge&quot; class=&quot;internal&quot;&gt;&lt;img src=&quot;/skins-1.5/common/images/magnify-clip.png&quot; alt=&quot;&quot; width=&quot;15&quot; height=&quot;11&quot; /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;A page&lt;br /&gt;
from Leonardo&amp;#39;s journal showing his study of a foetus in the womb (c. 1510)&lt;br /&gt;
Royal Library, &lt;a href=&quot;/wiki/Windsor_Castle&quot; title=&quot;Windsor Castle&quot;&gt;Windsor&lt;br /&gt;
Castle&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;
His notes and drawings display an enormous range of interests and&lt;br /&gt;
preoccupations, some as mundane as lists of groceries and people who owed him&lt;br /&gt;
money and some as intriguing as designs for wings and shoes for walking on&lt;br /&gt;
water. There are compositions for paintings, studies of details and drapery,&lt;br /&gt;
studies of faces and emotions, of animals, babies, dissections, plant studies,&lt;br /&gt;
rock formations, whirl pools, war machines, helicopters and architecture.&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
These notebooks&amp;mdash;originally loose papers of different types and sizes,&lt;br /&gt;
distributed by friends after his death&amp;mdash;have found their way into major&lt;br /&gt;
collections such as the Royal Library at &lt;a href=&quot;/wiki/Windsor_Castle&quot; title=&quot;Windsor Castle&quot;&gt;Windsor Castle&lt;/a&gt;, &lt;a href=&quot;/wiki/The_Louvre&quot; title=&quot;The Louvre&quot; class=&quot;mw-redirect&quot;&gt;the Louvre&lt;/a&gt;, the &lt;a href=&quot;/wiki/Biblioteca_Nacional_de_Espa%C3%B1a&quot; title=&quot;Biblioteca Nacional de España&quot;&gt;Biblioteca Nacional de&lt;br /&gt;
Espa&amp;ntilde;a&lt;/a&gt;, the &lt;a href=&quot;/wiki/Victoria_and_Albert_Museum&quot; title=&quot;Victoria and Albert Museum&quot;&gt;Victoria and Albert Museum&lt;/a&gt;, the &lt;a href=&quot;/wiki/Biblioteca_Ambrosiana&quot; title=&quot;Biblioteca Ambrosiana&quot;&gt;Biblioteca&lt;br /&gt;
Ambrosiana&lt;/a&gt; in &lt;a href=&quot;/wiki/Milan&quot; title=&quot;Milan&quot;&gt;Milan&lt;/a&gt; which holds the&lt;br /&gt;
twelve-volume &lt;a href=&quot;/wiki/Codex_Atlanticus&quot; title=&quot;Codex Atlanticus&quot;&gt;Codex&lt;br /&gt;
Atlanticus&lt;/a&gt;, and &lt;a href=&quot;/wiki/British_Library&quot; title=&quot;British Library&quot;&gt;British Library&lt;/a&gt; in &lt;a href=&quot;/wiki/London&quot; title=&quot;London&quot;&gt;London&lt;/a&gt; which has put a selection from its notebook &lt;em&gt;BL&lt;br /&gt;
Arundel MS 263&lt;/em&gt; on the web.&lt;a href=&quot;#cite_note-43&quot;&gt;[44]&lt;/a&gt; The &lt;em&gt;&lt;a href=&quot;/wiki/Codex_Leicester&quot; title=&quot;Codex Leicester&quot;&gt;Codex Leicester&lt;/a&gt;&lt;/em&gt; is the only major&lt;br /&gt;
scientific work of Leonardo&amp;#39;s in private hands. It is owned by &lt;a href=&quot;/wiki/Bill_Gates&quot; title=&quot;Bill Gates&quot;&gt;Bill Gates&lt;/a&gt;, and is displayed once&lt;br /&gt;
a year in different cities around the world.
&lt;/p&gt;
&lt;p&gt;
Leonardo&amp;#39;s journals appear to have been intended for publication because many&lt;br /&gt;
of the sheets have a form and order that would facilitate this. In many cases a&lt;br /&gt;
single topic, for example, the heart or the human foetus, is covered in detail&lt;br /&gt;
in both words and pictures, on a single sheet.&lt;a href=&quot;#cite_note-44&quot;&gt;[45]&lt;/a&gt; &lt;span class=&quot;reference&quot;&gt;&lt;a href=&quot;#endnote_aknone&quot;&gt;[ak]&lt;/a&gt;&lt;/span&gt; Why they were not published within&lt;br /&gt;
Leonardo&amp;#39;s lifetime is unknown.&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
&lt;a id=&quot;Scientific_studies&quot; name=&quot;Scientific_studies&quot; title=&quot;Scientific_studies&quot;&gt;&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;&lt;span class=&quot;mw-headline&quot;&gt;Scientific studies&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Leonardo_polyhedra.png&quot; title=&quot;Rhombicuboctahedron as published in Pacioli&amp;#039;s Divina Proportione&quot; class=&quot;image&quot;&gt;&lt;img class=&quot;thumbimage&quot; src=&quot;http://upload.wikimedia.org/wikipedia/commons/thumb/1/18/Leonardo_polyhedra.png/110px-Leonardo_polyhedra.png&quot; border=&quot;0&quot; alt=&quot;Rhombicuboctahedron as published in Pacioli&amp;#039;s Divina Proportione&quot; width=&quot;110&quot; height=&quot;117&quot; /&gt;&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Leonardo_polyhedra.png&quot; title=&quot;Enlarge&quot; class=&quot;internal&quot;&gt;&lt;img src=&quot;/skins-1.5/common/images/magnify-clip.png&quot; alt=&quot;&quot; width=&quot;15&quot; height=&quot;11&quot; /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Rhombicuboctahedron&quot; title=&quot;Rhombicuboctahedron&quot;&gt;Rhombicuboctahedron&lt;/a&gt; as published in &lt;a href=&quot;/wiki/Luca_Pacioli&quot; title=&quot;Luca Pacioli&quot;&gt;Pacioli&amp;#39;s&lt;/a&gt; &lt;em&gt;Divina&lt;br /&gt;
Proportione&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;
Leonardo&amp;#39;s approach to science was an observational one: he tried to&lt;br /&gt;
understand a phenomenon by describing and depicting it in utmost detail, and did&lt;br /&gt;
not emphasize experiments or &lt;a href=&quot;/wiki/Theory&quot; title=&quot;Theory&quot;&gt;theoretical&lt;/a&gt;&lt;br /&gt;
explanation. Since he lacked formal education in &lt;a href=&quot;/wiki/Latin_language&quot; title=&quot;Latin language&quot; class=&quot;mw-redirect&quot;&gt;Latin&lt;/a&gt; and &lt;a href=&quot;/wiki/Mathematics&quot; title=&quot;Mathematics&quot;&gt;mathematics&lt;/a&gt;, contemporary&lt;br /&gt;
scholars mostly ignored Leonardo the scientist, although he did teach himself&lt;br /&gt;
Latin. In the 1490s he studied mathematics under &lt;a href=&quot;/wiki/Luca_Pacioli&quot; title=&quot;Luca Pacioli&quot;&gt;Luca Pacioli&lt;/a&gt; and prepared a series of drawings of&lt;br /&gt;
regular solids in a skeletal form to be engraved as plates for Pacioli&amp;#39;s book&lt;br /&gt;
&lt;em&gt;Divina Proportione&lt;/em&gt;, published in 1509.&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
It appears that from the content of his journals he was planning a series of&lt;br /&gt;
treatises to be published on a variety of subjects. A coherent treatise on &lt;a href=&quot;/wiki/Anatomy&quot; title=&quot;Anatomy&quot;&gt;anatomy&lt;/a&gt; was said to have been observed&lt;br /&gt;
during a visit by Cardinal &lt;a href=&quot;/w/index.php?title=Louis_D%27Aragon&amp;amp;action=edit&amp;amp;redlink=1&quot; title=&quot;Louis D&amp;#039;Aragon (page does not exist)&quot; class=&quot;new&quot;&gt;Louis&lt;br /&gt;
D&amp;#39;Aragon&lt;/a&gt;&amp;#39;s secretary in 1517.&lt;a href=&quot;#cite_note-45&quot;&gt;[46]&lt;/a&gt; Aspects of his work on the studies of&lt;br /&gt;
anatomy, light and the landscape were assembled for publication by his pupil&lt;br /&gt;
Francesco Melzi and eventually published as &lt;em&gt;Treatise on Painting by Leonardo&lt;br /&gt;
da Vinci&lt;/em&gt; in France and Italy in 1651, and Germany in 1724, with engravings&lt;br /&gt;
based upon drawings by the Classical painter &lt;a href=&quot;/wiki/Nicholas_Poussin&quot; title=&quot;Nicholas Poussin&quot; class=&quot;mw-redirect&quot;&gt;Nicholas Poussin&lt;/a&gt;.&lt;a href=&quot;#cite_note-Chiesa-3&quot;&gt;[4]&lt;/a&gt; According to Arasse, the treatise,&lt;br /&gt;
which in France went into sixty two editions in fifty years, caused Leonardo to&lt;br /&gt;
be seen as &amp;quot;the precursor of French academic thought on art&amp;quot;.&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
&lt;a id=&quot;Anatomy&quot; name=&quot;Anatomy&quot; title=&quot;Anatomy&quot;&gt;&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;&lt;span class=&quot;mw-headline&quot;&gt;Anatomy&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Studies_of_the_Arm_showing_the_Movements_made_by_the_Biceps.jpg&quot; title=&quot;Anatomical study of the arm, (c. 1510)&quot; class=&quot;image&quot;&gt;&lt;img class=&quot;thumbimage&quot; src=&quot;http://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Studies_of_the_Arm_showing_the_Movements_made_by_the_Biceps.jpg/180px-Studies_of_the_Arm_showing_the_Movements_made_by_the_Biceps.jpg&quot; border=&quot;0&quot; alt=&quot;Anatomical study of the arm, (c. 1510)&quot; width=&quot;412&quot; height=&quot;598&quot; /&gt;&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Studies_of_the_Arm_showing_the_Movements_made_by_the_Biceps.jpg&quot; title=&quot;Enlarge&quot; class=&quot;internal&quot;&gt;&lt;img src=&quot;/skins-1.5/common/images/magnify-clip.png&quot; alt=&quot;&quot; width=&quot;15&quot; height=&quot;11&quot; /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Anatomical study of the arm, &lt;span&gt;(c. 1510)&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;
Leonardo&amp;#39;s formal training in the &lt;a href=&quot;/wiki/Anatomy&quot; title=&quot;Anatomy&quot;&gt;anatomy&lt;/a&gt; of the &lt;a href=&quot;/wiki/Human_body&quot; title=&quot;Human body&quot;&gt;human body&lt;/a&gt; began with his apprenticeship to &lt;a href=&quot;/wiki/Andrea_del_Verrocchio&quot; title=&quot;Andrea del Verrocchio&quot;&gt;Andrea del&lt;br /&gt;
Verrocchio&lt;/a&gt;, his teacher insisting that all his pupils learn anatomy. As an&lt;br /&gt;
artist, he quickly became master of &lt;em&gt;topographic anatomy&lt;/em&gt;, drawing many&lt;br /&gt;
studies of &lt;a href=&quot;/wiki/Muscle&quot; title=&quot;Muscle&quot;&gt;muscles&lt;/a&gt;, &lt;a href=&quot;/wiki/Tendon&quot; title=&quot;Tendon&quot;&gt;tendons&lt;/a&gt; and other visible anatomical features.
&lt;/p&gt;
&lt;p&gt;
As a successful artist, he was given permission to &lt;a href=&quot;/wiki/Dissection&quot; title=&quot;Dissection&quot;&gt;dissect&lt;/a&gt; human corpses at the hospital Santa Maria&lt;br /&gt;
Nuova in &lt;a href=&quot;/wiki/Florence&quot; title=&quot;Florence&quot;&gt;Florence&lt;/a&gt; and later at&lt;br /&gt;
hospitals in Milan and &lt;a href=&quot;/wiki/Rome&quot; title=&quot;Rome&quot;&gt;Rome&lt;/a&gt;. From 1510 to&lt;br /&gt;
1511 he collaborated in his studies with the doctor &lt;a href=&quot;/w/index.php?title=Marcantonio_della_Torre&amp;amp;action=edit&amp;amp;redlink=1&quot; title=&quot;Marcantonio della Torre (page does not exist)&quot; class=&quot;new&quot;&gt;Marcantonio&lt;br /&gt;
della Torre&lt;/a&gt; and together they prepared a theoretical work on anatomy for&lt;br /&gt;
which Leonardo made more than 200 drawings. It was published only in 1680 (161&lt;br /&gt;
years after his death) under the heading &lt;em&gt;Treatise on painting&lt;/em&gt;.&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;&lt;a href=&quot;#cite_note-Popham-42&quot;&gt;[43]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
Leonardo drew many studies of the &lt;a href=&quot;/wiki/Human_skeleton&quot; title=&quot;Human skeleton&quot;&gt;human skeleton&lt;/a&gt; and its parts, as well as muscles&lt;br /&gt;
and sinews, the heart and &lt;a href=&quot;/wiki/Circulatory_system&quot; title=&quot;Circulatory system&quot;&gt;vascular system&lt;/a&gt;, the &lt;a href=&quot;/wiki/Sex_organs&quot; title=&quot;Sex organs&quot; class=&quot;mw-redirect&quot;&gt;sex organs&lt;/a&gt;, and other internal&lt;br /&gt;
organs. He made one of the first scientific drawings of a &lt;a href=&quot;/wiki/Fetus&quot; title=&quot;Fetus&quot;&gt;fetus&lt;/a&gt; &lt;em&gt;in utero&lt;/em&gt;.&lt;a href=&quot;#cite_note-Popham-42&quot;&gt;[43]&lt;/a&gt;&lt;br /&gt;
As an artist, Leonardo closely observed and recorded the effects of age and of&lt;br /&gt;
human emotion on the physiology, studying in particular the effects of rage. He&lt;br /&gt;
also drew many figures who had significant facial deformities or signs of&lt;br /&gt;
illness.&lt;a href=&quot;#cite_note-Popham-42&quot;&gt;[43]&lt;/a&gt;&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
He also studied and drew the anatomy of many other animals as well,&lt;br /&gt;
dissecting cows, birds, monkeys, bears, and frogs, and comparing in his drawings&lt;br /&gt;
their anatomical structure with that of humans. He also made a number of studies&lt;br /&gt;
of horses.
&lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Design_for_a_Flying_Machine.jpg&quot; title=&quot;A design for a flying machine, (c. 1488) Institut de France, Paris&quot; class=&quot;image&quot;&gt;&lt;img class=&quot;thumbimage&quot; src=&quot;http://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Design_for_a_Flying_Machine.jpg/180px-Design_for_a_Flying_Machine.jpg&quot; border=&quot;0&quot; alt=&quot;A design for a flying machine, (c. 1488) Institut de France, Paris&quot; width=&quot;180&quot; height=&quot;157&quot; /&gt;&lt;/a&gt; &lt;/p&gt;
&lt;p&gt;&lt;a href=&quot;/wiki/Image:Design_for_a_Flying_Machine.jpg&quot; title=&quot;Enlarge&quot; class=&quot;internal&quot;&gt;&lt;img src=&quot;/skins-1.5/common/images/magnify-clip.png&quot; alt=&quot;&quot; width=&quot;15&quot; height=&quot;11&quot; /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;A design for&lt;br /&gt;
a flying machine, &lt;span&gt;(c. 1488)&lt;/span&gt; Institut de&lt;br /&gt;
France, Paris&lt;/p&gt;
&lt;p&gt;
&lt;a id=&quot;Engineering_and_inventions&quot; name=&quot;Engineering_and_inventions&quot; title=&quot;Engineering_and_inventions&quot;&gt;&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;&lt;span class=&quot;mw-headline&quot;&gt;Engineering and inventions&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;
During his lifetime Leonardo was valued as an engineer. In a letter to &lt;a href=&quot;/wiki/Ludovico_il_Moro&quot; title=&quot;Ludovico il Moro&quot; class=&quot;mw-redirect&quot;&gt;Ludovico il Moro&lt;/a&gt; he claimed to be able to&lt;br /&gt;
create all sorts of machines both for the protection of a city and for siege.&lt;br /&gt;
When he fled to Venice in 1499 he found employment as an engineer and devised a&lt;br /&gt;
system of moveable barricades to protect the city from attack. He also had a&lt;br /&gt;
scheme for diverting the flow of the Arno River in order to flood Pisa. His&lt;br /&gt;
journals include a vast number of inventions, both practical and impractical.&lt;br /&gt;
They include &lt;a href=&quot;/wiki/Viola_organista&quot; title=&quot;Viola organista&quot;&gt;musical&lt;br /&gt;
instruments&lt;/a&gt;, hydraulic pumps, reversible crank mechanisms, finned mortar&lt;br /&gt;
shells and a steam cannon.&lt;a href=&quot;#cite_note-LB-7&quot;&gt;[8]&lt;/a&gt;&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
In 1502, Leonardo produced a drawing of a single span 720-foot (240 m) bridge&lt;br /&gt;
as part of a &lt;a href=&quot;/wiki/Civil_engineering&quot; title=&quot;Civil engineering&quot;&gt;civil&lt;br /&gt;
engineering&lt;/a&gt; project for Ottoman &lt;a href=&quot;/wiki/Sultan&quot; title=&quot;Sultan&quot;&gt;Sultan&lt;/a&gt; &lt;a href=&quot;/wiki/Beyazid_II&quot; title=&quot;Beyazid II&quot; class=&quot;mw-redirect&quot;&gt;Beyazid II&lt;/a&gt; of &lt;a href=&quot;/wiki/Istanbul&quot; title=&quot;Istanbul&quot;&gt;Istanbul&lt;/a&gt;. The bridge was intended to span an inlet at&lt;br /&gt;
the mouth of the &lt;a href=&quot;/wiki/Bosporus&quot; title=&quot;Bosporus&quot;&gt;Bosporus&lt;/a&gt; known as&lt;br /&gt;
the &lt;a href=&quot;/wiki/Golden_Horn&quot; title=&quot;Golden Horn&quot;&gt;Golden Horn&lt;/a&gt;. Beyazid did&lt;br /&gt;
not pursue the project, because he believed that such a construction was&lt;br /&gt;
impossible. Leonardo&amp;#39;s vision was resurrected in 2001 when a &lt;a href=&quot;/wiki/Vebj%C3%B8rn_Sand_Da_Vinci_Project&quot; title=&quot;Vebjørn Sand Da Vinci Project&quot;&gt;smaller bridge&lt;/a&gt; based on his&lt;br /&gt;
design was constructed in Norway. On &lt;a href=&quot;/wiki/May_17&quot; title=&quot;May 17&quot;&gt;17&lt;br /&gt;
May&lt;/a&gt; &lt;a href=&quot;/wiki/2006&quot; title=&quot;2006&quot;&gt;2006&lt;/a&gt;, the Turkish government decided&lt;br /&gt;
to construct Leonardo&amp;#39;s bridge to span the &lt;a href=&quot;/wiki/Golden_Horn&quot; title=&quot;Golden Horn&quot;&gt;Golden Horn&lt;/a&gt;.&lt;a href=&quot;#cite_note-46&quot;&gt;[47]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
For much of his life, Leonardo was fascinated by the phenomenon of &lt;a href=&quot;/wiki/Flight&quot; title=&quot;Flight&quot;&gt;flight&lt;/a&gt;, producing many studies of the&lt;br /&gt;
flight of &lt;a href=&quot;/wiki/Bird&quot; title=&quot;Bird&quot;&gt;birds&lt;/a&gt;, including his c. 1505 &lt;a href=&quot;/wiki/Codex_on_the_Flight_of_Birds&quot; title=&quot;Codex on the Flight of Birds&quot;&gt;Codex on the Flight of Birds&lt;/a&gt;, as&lt;br /&gt;
well as plans for several flying machines, including a &lt;a href=&quot;/wiki/Helicopter&quot; title=&quot;Helicopter&quot;&gt;helicopter&lt;/a&gt; and a light &lt;a href=&quot;/wiki/Hang_glider&quot; title=&quot;Hang glider&quot; class=&quot;mw-redirect&quot;&gt;hang glider&lt;/a&gt;.&lt;a href=&quot;#cite_note-DA-9&quot;&gt;[10]&lt;/a&gt; Most were impractical, but the hang glider&lt;br /&gt;
has been successfully constructed and demonstrated.&lt;a href=&quot;#cite_note-47&quot;&gt;[48]&lt;/a&gt;
&lt;/p&gt;
&lt;p&gt;
&amp;nbsp;
&lt;/p&gt;
&lt;p&gt;
&lt;font size=&quot;3&quot;&gt;Contents&lt;/font&gt;
&lt;/p&gt;
&lt;p&gt;&lt;span class=&quot;toctoggle&quot;&gt;[&lt;a id=&quot;togglelink&quot; href=&quot;toggleToc()&quot; class=&quot;internal&quot;&gt;hide&lt;/a&gt;]&lt;/span&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Biography&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Biography&lt;/span&gt;&lt;/a&gt;
&lt;ul&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Early_life.2C_1452.E2.80.931466&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.1&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Early life, 1452&amp;ndash;1466&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Verrocchio.27s_workshop.2C_1466.E2.80.931476&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.2&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Verrocchio&amp;#39;s workshop, 1466&amp;ndash;1476&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Professional_life.2C_1476.E2.80.931513&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.3&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Professional life, 1476&amp;ndash;1513&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Old_age&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.4&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Old age&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Relationships_and_influences&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.5&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Relationships and influences&lt;/span&gt;&lt;/a&gt;
&lt;ul&gt;
&lt;li class=&quot;toclevel-3&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Florence.E2.80.94Leonardo.27s_artistic_and_social_background&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.5.1&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Florence&amp;mdash;Leonardo&amp;#39;s artistic and social background&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-3&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Assistants_and_pupils&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.5.2&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Assistants and pupils&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-3&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Personal_life&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;1.5.3&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Personal life&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Painting&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;2&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Painting&lt;/span&gt;&lt;/a&gt;
&lt;ul&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Early_works&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;2.1&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Early works&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Paintings_of_the_1480s&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;2.2&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Paintings of the 1480s&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Paintings_of_the_1490s&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;2.3&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Paintings of the 1490s&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Paintings_of_the_1500s&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;2.4&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Paintings of the 1500s&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Drawings&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;2.5&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Drawings&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Leonardo_as_observer.2C_scientist_and_inventor&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;3&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Leonardo as observer, scientist and inventor&lt;/span&gt;&lt;/a&gt;
&lt;ul&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Journals&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;3.1&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Journals&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Scientific_studies&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;3.2&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Scientific studies&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Anatomy&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;3.3&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Anatomy&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-2&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Engineering_and_inventions&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;3.4&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Engineering and inventions&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Leonardo_the_legend&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;4&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Leonardo the legend&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#List_of_paintings&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;5&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;List of paintings&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Footnotes&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;6&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Footnotes&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#References&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;7&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;References&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#Bibliography&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;8&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;Bibliography&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#See_also&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;9&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;See also&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li class=&quot;toclevel-1&quot;&gt;&lt;a href=&quot;http://en.wikipedia.org/wiki/Leonardo_da_Vinci#External_links&quot;&gt;&lt;span class=&quot;tocnumber&quot;&gt;10&lt;/span&gt; &lt;span class=&quot;toctext&quot;&gt;External links&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;
&amp;nbsp;
&lt;/p&gt;
&lt;p&gt;
&amp;nbsp;
&lt;/p&gt;
&lt;br class=&quot;clear&quot; /&gt;</description>
 <pubDate>Tue, 03 Jun 2008 23:46:35 -0400</pubDate>
 <dc:creator>Mike Ciavarella</dc:creator>
 <guid isPermaLink="false">comment 7663 at http://imechanica.org</guid>
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 <title>Science is not a championship.  </title>
 <link>http://imechanica.org/node/116#comment-7665</link>
 <description>&lt;p class=&quot;MsoNormal&quot;&gt;
&lt;span&gt;&lt;font size=&quot;3&quot;&gt;&lt;strong&gt;I think there are many great scientists in the world now!!!.&lt;/strong&gt; Many of them are more popular and many of them are not. It is very depends on their&lt;strong&gt; topic. &lt;/strong&gt;And &lt;strong&gt;also&lt;/strong&gt; on the &lt;strong&gt;innovation&lt;/strong&gt; of them in that topic&lt;strong&gt;. &lt;/strong&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;I send a paper by name of &amp;ldquo;&lt;strong&gt;WHY NO NEW EINESTEIN&lt;/strong&gt;?&amp;rdquo; weeks ago. But now I think it may be because in new scientific society everybody plays a small role but the result is great. of course many dont play even&amp;nbsp;this small role!&lt;/font&gt;&lt;/span&gt;
&lt;/p&gt;
&lt;br class=&quot;clear&quot; /&gt;</description>
 <pubDate>Tue, 03 Jun 2008 14:08:02 -0400</pubDate>
 <dc:creator>RoozbehSanaei</dc:creator>
 <guid isPermaLink="false">comment 7665 at http://imechanica.org</guid>
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 <title>Sir Isaac Newton, FRS (4 January 1643 – 31 March 1727)</title>
 <link>http://imechanica.org/node/116</link>
 <description>&lt;p&gt;Sir Isaac Newton, FRS (4 January 1643 – 31 March 1727) was an English physicist, mathematician, mechanician, astronomer, alchemist, and natural philosopher who is generally regarded as one of the greatest scientists in history. &lt;a href=&quot;http://en.wikipedia.org/wiki/Issac_newton&quot; target=&quot;_blank&quot;&gt;Read more...&lt;/a&gt;&lt;/p&gt;
&lt;br class=&quot;clear&quot; /&gt;</description>
 <comments>http://imechanica.org/node/116#comments</comments>
 <category domain="http://imechanica.org/taxonomy/term/75">mechanician</category>
 <category domain="http://imechanica.org/taxonomy/term/124">Issac Newton</category>
 <pubDate>Sat, 09 Sep 2006 23:11:12 -0400</pubDate>
 <dc:creator>Teng Li</dc:creator>
 <guid isPermaLink="false">116 at http://imechanica.org</guid>
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