Anyone interested in the history of mechanical technology might find interesting the series that I have published in Mechanical Engineering magazine.

Galileo’s Telescope Lenses

http://www.memagazine.org/oct06/features/clearas/clearas.html

Atmospheric Railway

http://www.memagazine.org/backissues/feb06 /features/tallyho/tallyho.html http://www.memagazine.org/backissues/feb06%20/features/tallyho/tallyho.html">http://www.memagazine.org/backissues/feb06 /features/tallyho/tallyho.html