Photons in Radio Waves and Visible Light

Experiments with interference of radio waves and visible light. This video shows single-photon interference with a variable path length and offers a explanation for this amazing phenomenon in the relativistic behaviour of the photon.

In the video I also discuss "2-photon" interference. I think it is good to make clear that I actually refer to "multi-photon" interference, because this type of interaction will generally not limited to just 2 photons.

0:00 General Intro
0:51 Radio wave interference experiment
6:04 Discussion results radio wave experiment
8:21 Visible light 2-photon interference experiment
13:22 Variable path single photon interference experiment
15:56 relativistic explanation of single photon interference

Special thanks to Eric Brummer for his contribution to the channel.

Links to earlier videos that discuss the method of microscopic interference visualization:
https://www.youtube.com/watch?v=h53PCmEMAGo
https://www.youtube.com/watch?v=TshYfYIxR9E

A calculation for single-photon intensity levels is given in this video at approx 8m55s:
https://www.youtube.com/watch?v=h53PCmEMAGo

This video contains a short clip from the SciFi movie "Interstellar" for illustration purposes only (under fair-use policy). Watch the official Interstellar trailer at:
https://www.youtube.com/watch?v=zSWdZVtXT7E
or even better: watch the full movie. By the way: the time dilation in Interstellar is of the gravitational nature. "7 years per hour" seems to be a gross over estimation though, given that people have no trouble walking around.

The video also contains a very short animation of an EM field taken from the video "Understanding Electromagnetic Radiation". Please check out this video if you want to know more on the subject: https://www.youtube.com/watch?v=FWCN_uI5ygY

The DJ impersonator used a short audio clip of Tiësto - Live @ Tomorrowland 2019:
https://www.youtube.com/watch?v=keAW7CDF3_0

Видео Photons in Radio Waves and Visible Light канала Huygens Optics