The Ionosphere is why we can listen to AM/Shortwave radio waves across thousands of miles at night. When atmospheric particles ‘tighten up’ at night, away from the Sun’s bombardment of multi-spectral waves across the upper atmosphere, the Ionosphere becomes like ‘glass’. That’s why we can bounce radio waves off of the Ionosphere and listen to distant broadcasts at night.
Funny indeed that we need to go back in time and that this 70's film actually explains the working principles very well. I was searching to find out how and why HF waves are reflected (or refracted, or both), but the majority of videos say the fact, without explaining how/why.
Kiboz2000 stop crediting nutty Nick with everything he just took others ideas and made them useful in he modern world, Beto he went totally nuts n married a pigeon
@@terrymac9570 you are a moron. But I could tell that from your comment about bouncing things off the moon, you do realize that the ESA has admitted that new data shows that the moon is in the earth's atmosphere right? Btw Nikola Tesla had no c in his name it would be nik. He was in fact the one who discovered how to use the ionosphere to bounce radio waves. He didnt steal anything moron why do you think he died poor?
Smoove king there is a phenomenon known as the MUF (maximum usable frequency) generally frequencies >30MHz have the ability to pass through the ionosphere wher frequencies
Electrons are always positive. There is no such thing as negative particles. There is only a positive charge. You can not have a negative charge. There is no speed, only rate of induction. Permittivity Permeability Capacitance and Resistance.
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This video answered questions that googling for an hour could not.
Very nice and informative. Useful information. Thank you.
Holy crap this video is 86 years old. Nonetheless pure gold on ionospherical propagation information. Thanks a lot!
Not yet -- it's from 1950 (MCML).
Are we de-evolving? Why does't anyone explain things this well anymore!?!?
Yes we are
The Ionosphere is why we can listen to AM/Shortwave radio waves across thousands of miles at night. When atmospheric particles ‘tighten up’ at night, away from the Sun’s bombardment of multi-spectral waves across the upper atmosphere, the Ionosphere becomes like ‘glass’. That’s why we can bounce radio waves off of the Ionosphere and listen to distant broadcasts at night.
Funny indeed that we need to go back in time and that this 70's film actually explains the working principles very well. I was searching to find out how and why HF waves are reflected (or refracted, or both), but the majority of videos say the fact, without explaining how/why.
I thought I recognized his voice. The album Northern Exposure by Sasha/Digweed has this remixed in. One of my favorite albums ever.
thanks for the digweed, sasha
Unites States Department of the Army, The Effects Of The Ionosphere On Radio Wave Propagation, Film (TF 1692), 1950
very good info that is still very relevant
My SCIENCE just got a +1
Very nice
Just wondering when did this come out? Totally blind so can't see the video, but sounds like late 40s early 50s to my ears.
1950
@@ArtBodger pretty good graphics back then. :)
this is a really great vid
Negative Romeo Charlie this hour due to propagation. US Army Europe, 1980s
How do spaceships communicate with the Earth then if there is only tiny angle allowing radio waves go through ionosphere ?
Only certain frequencies skip off the ionosphere. Higher frequencies (like what spacecraft use) will pass through it.
Is the information in this video still accurate?
YES!
Sory but not Marconi it was Tesla...
Kiboz2000 stop crediting nutty Nick with everything he just took others ideas and made them useful in he modern world, Beto he went totally nuts n married a pigeon
@@terrymac9570 you are a moron. But I could tell that from your comment about bouncing things off the moon, you do realize that the ESA has admitted that new data shows that the moon is in the earth's atmosphere right?
Btw Nikola Tesla had no c in his name it would be nik. He was in fact the one who discovered how to use the ionosphere to bounce radio waves. He didnt steal anything moron why do you think he died poor?
@@whatisdoneinthedarkwillbeb9204 True
Well they were not bouncing radio waves off the moon, apparently.
777 if not then that’s just buggered all of EME since 1956 in the amateur realm
how can radio signals not be able to pass the ionosphere but also be able to moon bounce
Smoove king there is a phenomenon known as the MUF (maximum usable frequency) generally frequencies >30MHz have the ability to pass through the ionosphere wher frequencies
You may want to update your knowledge base with some newer videos although the principal hasn’t changes the information today is clearer .
@@terrymac9570 you do know that it's now been admitted that the moons in the earth's atmosphere right?
whitch craft
The entire cold war was just ionosphere research lmfao. How did buzz Aldren get through the 1400 degree kelvin thermosphere 😂
Electrons are always positive. There is no such thing as negative particles. There is only a positive charge. You can not have a negative charge. There is no speed, only rate of induction. Permittivity Permeability Capacitance and Resistance.