Benjamin Franklin invented the bifocals
No he doesn't because in all his pictures he didn't have glasses and I don't think glasses where invented back in those early days.
No. Glasses where not invented in those days., and in all his pictures he has no glasses.
He invented clocks and watch-glasses
it has, or has it?
Benjamin Franklin
lizzards
chicken
check wikipedia
= plastic spectacle Glasses lenses invented 1934 =
Ernest Calabro The first use of 3D glasses was in 1922 for the movie "Power of Love".
Eyeglasses were invented in Italy in the late 13th century. They were initially made from two magnifying glasses framed together.
The very first eyeglasses were invented in 1286, but many later developments were made that improved on the initial designs. Benjamin Franklin invented bifocals, glasses with two distinct optical powers, and George Airy invented lenses correcting astigmatism.