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Richard Feynman talks about light

sdfhsfh · 1.8M views · 2007-11-02 · 5:55

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Overview

A PBS clip in which Richard Feynman explains the strange nature of light and electromagnetic radiation. He conveys how little of it we actually see and how radio waves are present everywhere.

On Hacker News

Recommended as an entertaining, accessible way to get a feel for light and electric fields.

Recommended by 4 HN people across 4 months · HN mentions 2018–2025

Topics

Fundamental physicsEveryday physics & science demos
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feynmanlightelectromagnetismphysicsradio waves

What people said

kypro · 2025-02 · Strong recommendation

I'm sure a lot of people here have already seen this, but for those who haven't I highly recommend you watch this video of Feynman explaining light, [VIDEO] He had an amazing ability to make physics fun and entertaining. I could listen to him talk all day.

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RichardCA · 2020-08 · Strong recommendation

Let's try to work the problem in a way that avoids pedantry, just for a moment. This is one of my favorite PBS clips from the 80's in which Richard Feynman explains how strange the nature of light and by extension all of electromagnetic radiation. [VIDEO] If you listen carefully, you notice that he never talks about wave/particle duality (because he wasn't giving a classroom lecture). What he does talk about is an electric field that waves slosh around in, and that something "elaborate and complicated" is going on at a deeper level. That's what I'm on about, if you were pressed to explain it so that a bright child would get it, how would you do that?

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martyvis · 2022-03 · Recommendation

Richard Feynman gets very excited about this very fact, that at any point it has ALL of the radio waves, amongst other electromagnetic radiation, that just has to be tuned in or focussed on. [VIDEO]

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Sources

Video by sdfhsfh, played through YouTube.

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