Penny postcards
USGenWeb, a genealogy site, has a really cool collection of penny postcards, organized by state. I love looking at the old structures – can you imagine driving on this bridge?
history
MAKE presents: The LED
LEDs are in technology all around us, familiar and helpful for sure but you may wonder – Who invented them? How do I use one? Is it possible to make my own LED?!? Learn the answers to these baffling questions and more in – MAKE presents: The LED Suscribe to the MAKE podcast | Download […]
Evolution of the typewriter
I found this great article about the evolution of the typewriter on the site of the Science Museum in Kensington, England. QWERTY refers to the most common form of layout of letters found on the keyboard of a typewriter or computer. The name refers to the first six letters at the top of the board. […]
Pre-Edison sound sample
Édouard-Léon Scott’s phonautograph recorded sound visually and apparently did so almost 20 years before Thomas Edison’s famous audio work – For more than a century, since he captured the spoken words “Mary had a little lamb” on a sheet of tinfoil, Thomas Edison has been considered the father of recorded sound. But researchers say they […]
