CuriousMarc Powers up (and Explains) Old Cathode Ray Tubes

Wow, really cool video from CuriousMarc and the guy who wrote the "Open Circuits" book.  But fellows, you really need to be more careful with the high voltage. Remember poor Ross Hull.  One hand behind the back would help.  Volts jolt, but mills kill.    

Watch Mr. Wizard! 1952 Program on Electromagnetism. And more! (video)

Wow.  This is a very thought provoking program.  It is kind of like "Mr. Roger's Neighborhood," but with science. The lessons provided by Mr. Wizard are really good, but one shudders to think about doing the these experiments with kids (or even with adults!) in today's world.  Here are a few of things that would cause trouble today:  

-- Liquid mercury.  

-- A big power supply. ("Here Willy, you hold the positive terminal.") 

-- Even the sprinkling of iron filings would probably require masks at a minimum.  

-- In the end, letting poor Willy drop to the floor when Betsy turns off the electromagnet that was holding his swing in the air.  

-- And of course, poor old Mr. Wizard's affinity for the kids would stir suspicions. 

We also see a sad and very early example of the influence of advertisers and what they call today "product placement."  Note the fairly obvious plug (via Morse Code!) for breakfast cereal.  In the credits you will see that the program was sponsored by "The Cereal Institute."  What next kids?  Cigarettes? 

But there is a lot of virtue in this program:  The development of the telegraph key, Morse Code,  CW sidetone.  Unlike many of the Box Top Extras of today, young Betsy was not afraid to wind a coil.   

We should all embrace the spirit of Mr. Wizard.  We are, after all, the International Brotherhood of Electronic WIZARDS!  These experiments reminded me a lot of the Trivial Electric Motor that my son Billy and I made when he was around Willy's age (thanks for the idea Alan Yates).  

Thanks to Chuck KF8TI for alerting us to this show.  Chuck says this program was an early influence on him, and was one of the things that provided a connection between the theory he was learning in college and the real world of electronic devices. 

Many more great programs like this can be found on Mr. Wizard's YouTube Channel: 

https://www.youtube.com/user/MrWizardStudios   Please let us know if you find other videos (on this channel or elsewhere)  that will be of special interest to the IBEW. 

Finally, color TV in 1952?  That seems a bit early for color.  What do you folks think was happening here? 

The Story of Television (Sarnoff's Version) -- 1956 Film

Of course, this has to be taken with a huge grain of salt.  "General" Sarnoff sits there and claims that Vladimir Zworkyin "invented" electronic television.  But Philo Farnsworth really did that.  Zworykin's claim to invention has about as much validity as Sarnoff's claim to having been a General!  

But still, there is a lot of interesting info amidst the RCA propaganda.  Again, it is really striking how far they had come before WWII put things on hold for four years.