Check out this glass cylinder filled with vacuum tubes that Brian's Grandfather collected over years of fixing old television sets. Believe it or not, but when Brian's Grandfather was your age, televisions didn't even exist. When early televisions were developed, they were basically large wooden boxes filled with vacuum tubes, a Cathode Ray Tube (CRT) and an electroacoustic transducer (i.e., a speaker). The image was displayed on the front of the CRT. Anyway, Brian's Grandfather (your Great-Grandfather), had a hobby of fixing those old televisions, and he collected a lot of vacuum tubes. The vacuum tubes were the electronic hardware that allowed those old televisions to convert signals received by rooftop antennas into black and white pictures on the front of the CRT.
Vacuum tubes. Awesome!!!
~ Flat Stanley
No comments:
Post a Comment