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Feynman 2-2.4: Waves

[Intro: Sound of Water Splashing] [Liquid Wah-Wah Guitar Riff] [Live Drum Break enters - Groovy] (Here is an analogy...) (Jump in the pool.) [Verse 1: The Water & The Cork] If we are in a pool of water... And there is a floating cork very close by. We can move it "directly"... By pushing the water with another cork. (Push it.) If you looked only at the two corks... You would see that one moved immediately. Some kind of "interaction" between them. But what we really do... is disturb the water. (It's the water.) The water... then disturbs the other cork. [Chorus: The Jiggle - Melodic Hook] [Organ Swell - Soulful] If we jiggle the cork... a new phenomenon. The motion of the water... moves the water there. And Waves travel away! (Waves travel away...) An influence very much farther out. An oscillatory influence. Replacing direct interaction... With the Electromagnetic Field. [Verse 2: The Frequency Tour - Pick up the Pace] The field can carry waves. Light... Radio... Electromagnetic Waves. The only thing that is really different... Is the frequency of oscillation. (Just one number.) Shake a charge back and forth... more and more rapidly. Start at one hundred cycles per second. The "pickup" from the walls. Increase to one thousand kilocycles. We are "On the Air!" (Radio Broadcasts.) (Nothing to do with the air!) [Verse 3: The Visible & Beyond] Increase the frequency... FM and TV. Going still further... Radar. Still higher... and we do not need an instrument. We see it with the human eye. (Red. Blue. Violet.) Five times ten to the fourteenth! The oscillation of the charged comb. If we could shake it that fast. (Shake it fast!) [Bridge: The Physicist's View - Stripped Back] The fact that we can see this range... Makes it no more impressive to a physicist. But from a human standpoint... Of course... it is more interesting. (So interesting.) [Outro: High Energy Build-Up - Chaotic Jazz] Go up even higher... X-Rays. (Very high frequency light!) Still higher... Gamma Rays. (From the nuclei!) Go to ten to the twenty-four... Made artificially... with the Synchrotron here at Caltech. (Right here.) And finally... stupendously high frequencies. A thousand times more rapid. Cosmic Rays. (We cannot control them!) (Just waves...) [Final Organ Chord]