Feynman's Lost Lecture (ft. 3Blue1Brown)

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Published 2018-07-20
Check out Grant’s channel: 3blue1brown: youtube.com/3blue1brown

This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein, "Feynman's lost lecture”, for the full story behind this lecture, and a deeper dive into its content.

Tweet referenced at the start: twitter.com/3blue1brown/status/1016936129117937664

Music by Nathaniel Schroeder: soundcloud.com/drschroeder/elizabeth-the-mouse
Music by Vincent Rubinetti: soundcloud.com/vincerubinetti/one-two-zeta

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Created by Henry Reich

All Comments (21)
  • @zaheera6899
    As Feynman once said "...it takes tremendous strain on the mind to understand certain concepts.." now I know he was right.
  • @3blue1brown
    I know what you're thinking: Either Henry is taking some well-deserved time off and I'm just helping to fill in during that vacation, or else he's currently tied up in my basement providing me occasional sound bites for food while I slowly take over the channel for good. To anyone worried about case #2, don't be silly. He's in the attic. Way too many escape routes in the basement.
  • @adamkendall997
    Ohhhhhh, it all makes sense now. Not to me but I'm sure to someone it does.
  • “You don’t need calculus to understand this” 3 minutes later “As you can see, if you keep adding infinitely small sections to this polygon, it trends toward a circle”
  • @89macgyver
    "What special curve satisfies the property that the tangency direction for a point theta radians off the horizontal is given by this vector from the special eccentric point from the circle to a point theta degrees around that circle from the vertical? Okay... Is the question clear?" Uhhhhhhhhhh... infinite intelligence load error
  • @nienke7713
    I find it fitting that a guest video was used to talk about a guest lecture
  • @Hampardo
    I'm afraid I only have a finite amount of intelligence.
  • @Deneberus
    Was scrolling through my recommendeds and had to watch this just because of that trippy thumbnail.
  • Amazing, Wish I had this to understand in school and not just memorize to get grades
  • Newton - "OMG they don't understand my physics!" Feynman - "Hold my beer."
  • @mrgaiusbonus
    I always thought it was called focal point coming from optics that can be used to bundle sunlight and create fires.
  • @Crocy
    My head hurts a little, but I think I understand most of it. Remembering it on the other hand.....
  • @infochan6776
    I am so confused but I'll come back to this later when I've approached infinite intelligence.