The first lightbulb
Monday, August 25th by Ben YatesFrom Edison’s 1880 patent application:
My favorite part is how awesomely crisp all the lines look — no computers, but they managed to get perfect concentric circles. I wonder how it was created — woodcuts? Protractors?
August 25th, 2008 at 2:23 pm
Probably with a drafting compass.. it is all too easy to do concentric circles with them.
August 25th, 2008 at 4:21 pm
Awesome, great find.
August 26th, 2008 at 10:25 am
Thanks! It’s via durova. (You might also like this closeup of a butterfly’s tongue.)
August 26th, 2008 at 10:56 am
Ainali: oops, that’s what I meant instead of protractors :P . But I still wonder whether woodcutting is involved — maybe not. (Check out this one by Rudyard Kipling, though.)
August 27th, 2008 at 11:12 am
Nice find! Of course, some of us know who really invented the light bulb in 1879!