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Electronics-Themed Comics
February 1961 Radio-Electronics

February 1961 Radio-Electronics

February 1961 Radio-Electronics Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio-Electronics, published 1930-1988. All copyrights hereby acknowledged.

CRT implosion initiated by flame rather than an impact, as opposed to most being struck with a metallic object.

These two electronics-themed comics appeared in a 1961 issue of Radio-Electronics magazine. The one on page 59 over-dramatizes what happens when a television picture tube (cathode ray tube, CRT) breaks. A vacuum exists inside the tube in order to minimize the probability of electrons from the electron gun colliding with ambient atoms or molecules in their paths. Doing so reduces the sharpness (focus) of the picture by spreading the beam, and causes random phosphorous emission across the screen. The getter material flashed during production of the tube captures an acceptable majority of particles to improve the vacuum. Would you fear the explosion of a CRT with an internal pressure 14.7 psi (standard at sea level) above atmospheric pressure? Sure, it would scatter glass shards outward, but not like if there was maybe 35 psi such as in a car tire. Even with a perfect vacuum in the CRT, it cannot be greater than -14.7 psi (or whatever ambient is at the location), and then the glass shards blast inward (but some do bounce back outward). Unlike the comic, which depicts the kind of decompression shown in commercial airliners flying at 30,000' with a huge volume of air escaping, an imploding CRT makes a startling "poof" sound, but no perceptible air movement. No, you don't want to be standing next to one, but you won't get sucked into it. Yes, I have seen a CRT implode (as a kid, after chucking a rock at it). BTW, I colorized the comics.

Electronics-Themed Comics

TV picture tube implosion - RF Cafe

"It's called implosion!"
Page 59

Television related comic - RF Cafe

"There it is! The latest in TV remote control! It lets the sponsor turn the sound back on!"
Page 81

 

 

Posted June 28, 2024


These Technically-Themed Comics Appeared in Vintage Electronics Magazines. I personally scanned and posted every one from copies I own (and even colorized some). 235 pages as of 6/28/2024

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