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About RF Cafe
Copyright: 1996 - 2024 Web BSEE - KB3UON RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while typing up your telephone line, and a nice lady's voice announced "You've Got
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Electronics Inventors Quiz
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Most of these matches of the devices and its inventor are pretty easy for people who have been around electronics for any length of time (well, not if the length of time is a day or two), but a couple just might stump you. This Electronics Inventors Quiz appeared in a 1963 edition of Popular Electronics, so you won't be challenged with knowing the inventors of the LCD or MEMS devices, but neither will you have to know who came up with the abacus or the Archimedes screw :-). Electronics Inventors Quiz By Robert P. Balin
Electronic Inventors Quiz 1) Bardeen, Brattain, Shockley _____ 2) De Forest _____ 3) Edison _____ 4) Faraday _____ 5) Franklin _____ 6) Lissajous _____ 7) Roentgen _____ 8) Weston _____ 9) Wheatstone _____ 10) Yagi _____
See answers below.
Quizzes from vintage electronics magazines such as Popular Electronics, Electronics-World, QST, and Radio News were published over the years - some really simple and others not so simple. Robert P. Balin created most of the quizzes for Popular Electronics. This is a listing of all I have posted thus far.
Inventors Quiz Answers 1 - F John Bardeen, Walter H. Brattain, and William B. Shockley invented the point-contact transistor in 1948.2 - J Lee De Forest invented the grid Audion, the first practical three-element ampli-fier tube, in 1906. 3 - E Thomas A. Edison invented the cylinder phonograph, the forerunner of the modern record player, in 1877. 4 - I Michael Faraday discovered the principle of the electric motor in 1821, and of the transformer in 1831. 5 - H Benjamin Franklin invented the lightning rod in 1750. 6 - G Jules A. Lissajous first observed the combination of two waveforms now called "Lissajous figures" in 1857. The effect is often seen when using the modern oscilloscope. 7 - B Wilhelm K. Roentgen first observed the effects of "Roentgen rays," or X rays, in 1895. 8 - C Edward Weston invented the Weston cadmium cell in 1893. It is still in worldwide use as a standard of electromotive force or voltage. 9 - A Sir Charles Wheatstone first demonstrated the bridge circuit that now bears his name in 1843. It was originally devised by Samuel H. Christi in 1833. 10 - D Hidetsugu Yagi developed his directional parasitic element antenna in Japan in the early 1920·s
Posted April 11, 2019(original 1/3/2013) |
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