Antenna Theory Propagation

Why can't all modern day YouTube educational videos start with an epically uplifting orchestra?

Thank you Royal Canadian Air Force for creating such an informative and aesthetically pleasing video. Coming from a US Marine decades later, this presentation helped me understand the fundamentals of wave propagation.

Back when Canada was great. Greetings all Canadian avionics folks here. Bob, if you're still around, thanks for the start in the career.

❤😎 Love & Respect to the whole team for making this effort long-long back! It still helps

For weeks I've been looking for a video describing WHY half wavelength is SOOOO important in every conductor carrying a varying current. All videos I could find described the standing wave you create at the half wavelength, but failed to describe WHY it radiates that specific frequency. This video does the simple and yet very effective way of doing just that! Thank you to the uploader of this video!

I can't stress enough how this video helped this all finally make sense, just awesome.

In the mid-70's I used this as a training film (it was old, scratched 16mm celluloid film) when I was a USAF military adviser to the Imperial Iranian Air Force. Yes, Iran was an American ally at the time and the Shah was still on the Peacock Throne. So glad to find it online. For those who think this is crude compared to what you can create with today's technology, it was animated by hand, one frame at a time, just like Walt created Mickey in 1928.

The narration level is good for 12 intelligent year old boy. What a success to inform public masses

Perfectly straightforward and clear instructional video. Everything simply broken down to the basics and explained.

This is absolutely fantastic as a visualization!

Wow, the polar diagram explanation starting at around 9:00 minutes blew my mind. Very clear explanation. Thank you.

Good explanation connecting the standing waves of current and voltage to the strength of the magnetic and electric fields that are produced by them, respectively. And an excellent description of how the radiation pattern is sketched by first measuring the field strengths at points away from the antenna.

I want a refund from my university. My instructor has his PhD in this and still couldn't explain it...

I spent a couple of weeks with headaches reading various textbooks about this until it all sunk in. This makes it perfectly clear in 12 minutes and 25 seconds, (with the exception of the voltage/current phase relationship of the radiated signal.) The only thing I should point out is something that I originally confused myself about from seeing all those sine waves. The field doesn't actually have the 'shape' of a sine wave. The sine only represents the intensity of the energy and its field polarity reversal. It actually physically 'looks' more like like fluctuating soundwave pressures, (if you can imagine them with 2 phases and a polarity reversal.) Recall that electromagnetic waves have wave/particle duality, so they can also be pictured as a stream of photons of fluctuating density. Good luck with that bit, but you get my point. :)

This video turned my life around.

If you know about current and electromagnetism already, this is incredibly beautiful. Well made explanation what's going on!

Even grade 10 students will be able to understand from this video. Hat off 🙏🏻🙏🏻

I just learned more in 12 minutes than I have in the last 50 years.

Bravo Canada...........

for such a short film, this is suprisingly informtive and easy to understand.

Very good. Thanks, now I learnt a lot more about antenna theory, but I need to keep learning and put the knowledge into action.