History Home
Events
Birthdays
Deaths
Years
Add "Today in History" or "Today's Birthdays" to Your Site - it's Easy!
Web
brainyhistory.com
Lens
1952
1st plastic lens for cataract patients fitted (Philadelphia)
1948
Dr. Frank G Back (New York City) patents lens to provide zoom effects
1947
1st telescope lens 200" (508 cm) in diameter completed
1947
Lens to provide zoom effects demonstrated in New York City
1936
200" telescope lens shipped, Corning Glass Works, New York-Cal Tech
1897
Alvin Graham Clark, dies 3 weeks after 1st use of Yerkes 40" lens
1706
John Dollond, owner of 1st patent for achromatic lens
1648
Battle of Lens: French duke d'Enghien defeats Spaniards
History Home
Copyright 2007 BrainyMedia.com
About Us
Inquire
Privacy
Terms
Copyright