This genera of video is invaluable. Shows the BASICS and explains how a technology evolved. Understanding these analog basics is the gateway to and of the digital world we now live in. Thanks for the post!
I'd love to see this turned into an interactive lesson where a student could adjust the conditions; carrier wave, type of modulation, various virtual tubes, etc. Regardless, this is just a fantastic video!
to make the diafragm use paper, or any other light material and something like graphite ground into small pellots from a pencil, copper wire to connect, a vacuum tube is a glass bulb like the light bulb with as little air inside thanks to a pump for the vacuum, to metal prongs are close not touching for a spark to fly between, a bit like the modern transister. this video gives enough to build 1.
Someone please help me! I have followed all videos trying to make super simple radio. I connect a battery to transformer which is then connected to a wire, and I put another wire about a centimeter away. The current went through the first wire but the second wire had no current going through it. Why in all videos I see everyone else can make radio and make electricity go through wire from a distance but I can’t? Nobody is explaining this so please help! None of the current passing through the first wire is detected by the second wire, and no matter how close I put it, nothing happens.
Man, Im really no expert, but maybe that alternated current coming from transformer is not amplified, so it cant be transmited to the other wire. As seen in the video, they needed valves to amplify the signal back on time. Today we can make simpler amplificators from transistors, those are maybe the ones youre missing out
When a nearly century old video is more informative than 99.9% of new videos. Thank you for posting this when you found it.
Damn ur right, big love to u all from Buenos Aires Argentina
Extremely true in this age and I can't stress enough how often I encounter this
An "instructional sound film", no less.
Exactly
Agreed
This is the best explanation of radio I’ve ever heard. Thanks for sharing it.
These old videos work because the graphics were primitive so they had to explain in detail.
that, and there was no pausing or rewinding so they had to recap things a lot
Thanks for sharing such significance of the nuances.
This genera of video is invaluable. Shows the BASICS and explains how a technology evolved. Understanding these analog basics is the gateway to and of the digital world we now live in. Thanks for the post!
Gotta love the old school way of explaining this. Finally, this makes sense.
How this doesn't have more views? Thank you for the video.
Unfortunately the general population would rather watch babies puke and people commit suicide than to become educated.
I'd love to see this turned into an interactive lesson where a student could adjust the conditions; carrier wave, type of modulation, various virtual tubes, etc. Regardless, this is just a fantastic video!
I love that this explains enough that it could be used to build a radio, actually useful information!
Love these old movies on how things work
Very beautifully explained
yh excellent, I loved the way they took time to explain as much as they could
Excellent.
Beautifully explained..😊
This is the only useful video related to radio on youtube #old is gold
This is really good, tks for sharing
wonderful! thx for posting
High quality explaination
Awesome
How do these fucking tubes work
I feel like this doesn't really explain whats actually happening or how you would go about making a radio but still cool and funny
to make the diafragm use paper, or any other light material and something like graphite ground into small pellots from a pencil, copper wire to connect, a vacuum tube is a glass bulb like the light bulb with as little air inside thanks to a pump for the vacuum, to metal prongs are close not touching for a spark to fly between, a bit like the modern transister.
this video gives enough to build 1.
Cell phone shown working in 1943 !
9:05 First cell phone?
Me searching this cuz im about to buy one:
crystals last forever they say
i see
Someone please help me! I have followed all videos trying to make super simple radio. I connect a battery to transformer which is then connected to a wire, and I put another wire about a centimeter away. The current went through the first wire but the second wire had no current going through it. Why in all videos I see everyone else can make radio and make electricity go through wire from a distance but I can’t? Nobody is explaining this so please help! None of the current passing through the first wire is detected by the second wire, and no matter how close I put it, nothing happens.
Man, Im really no expert, but maybe that alternated current coming from transformer is not amplified, so it cant be transmited to the other wire. As seen in the video, they needed valves to amplify the signal back on time. Today we can make simpler amplificators from transistors, those are maybe the ones youre missing out
have them closer or a stronger battery, 1cm is small to humans but a big gap for the weak initial waves.
Funny, but it doesnot explain how radio works, only the magic processes in the transmitter.
And they’re giving me a false fact about transformers. They cannot convert DC into AC.