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Post AYNdbRGlX8X8SQK7eq by [email protected] |
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Post #AYMVAy0ehkxxOBh7YG by [email protected] |
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A little classical mechanics problem you can solve without doing any calculatio… |
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Post #AYMVAy5yNzDfegBMq8 by [email protected] |
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@j_bertolotti - A loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo… |
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Post #AYMY4acH4DsExewPFg by [email protected] |
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@johncarlosbaez @j_bertolotti It's a classic! Exercise 2 in Chapter 2 of Br… |
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Post #AYMYRgsPxPel2PVWE4 by [email protected] |
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@johncarlosbaez @j_bertolotti I can't see how this can be deduced without s… |
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Post #AYMjXNbdcJOSVKZf4S by [email protected] |
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@RobJLow As Newton laws are symmetric with respect to time reversal, the time n… |
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Post #AYMjXNgFLB50jcjLFo by [email protected] |
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@j_bertolotti @johncarlosbaez But isn't that also true if you were balanced… |
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Post #AYMjXNk96gCOviYSKe by [email protected] |
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@RobJLow - if you've got a ball on top of a cusp, the force there is ill-de… |
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Post #AYMo1J4TRRomwZaUmO by [email protected] |
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@johncarlosbaez The time symmetry argument is nice. I was mostly trying to push… |
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Post #AYNdbRGlX8X8SQK7eq by [email protected] |
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@j_bertolotti @RobJLow @johncarlosbaez This argument isn’t quite satisfying t… |
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Post #AYNdbRLNG0DggiTnqC by [email protected] |
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@Ianagol @j_bertolotti @RobJLow - "I had to do the integral like John did.… |
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Post #AYNe5srXVWAgiv2dSS by [email protected] |
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@johncarlosbaez @Ianagol @RobJLow I feel "my" (not mine, I read about… |
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Post #AYNhCAlk8zNXrM1Lc0 by [email protected] |
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@j_bertolotti @johncarlosbaez @Ianagol @RobJLow How much smoothness does this r… |
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Post #AYNhCAqLrr465eB1nM by [email protected] |
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@irving @j_bertolotti @Ianagol @RobJLow -I think the argument works when the po… |
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Post #AYNpKRUkdlu1gTWkIS by [email protected] |
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@RobJLow Afaik there is one counterexample with a carefully chosen shape of the… |
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Post #AYNpKSjg1lR5X3WBCS by [email protected] |
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@j_bertolottiThe initial conditions have to be sufficiently well-behaved for Ne… |
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Post #AYNpKSoHkd7dlLfrNo by [email protected] |
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@SylviaFysica @j_bertolotti @RobJLow - Cool! "Norton's dome"? I&… |
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Post #AYNzDxbhqgyonDKP8S by [email protected] |
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@johncarlosbaez @j_bertolotti @Ianagol @RobJLow Ah, that’s perfect! So the l… |
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Post #AYNzDxgJZYfN1VU5Jo by [email protected] |
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@johncarlosbaez @j_bertolotti @Ianagol @RobJLow This paper has a weaker hypothe… |
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Post #AYNzDxkZJk4LEhTTwu by [email protected] |
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@irving - thanks, I've often wondered about the optimal hypotheses require… |
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Post #AYOP6II7ex3PR2Amrw by [email protected] |
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@johncarlosbaez @Ianagol @j_bertolotti @RobJLow I had fun a bit ago with the qu… |
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Post #AYPnII1r3LLC9cmDMu by [email protected] |
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@johncarlosbaez Norton's dome is named after the philosopher who rediscover… |
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Post #AYPnIIn0E33SVqprrE by [email protected] |
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@SylviaFysica @johncarlosbaez @j_bertolotti @RobJLow fascinating. is the revers… |
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Post #AYPnIIrbwuk0k8zY2a by [email protected] |
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@cortogantese @SylviaFysica @j_bertolotti @RobJLow - it's not unique, this … |
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Post #AYRs27h6b6DLYV6Ml6 by [email protected] |
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@SylviaFysica @johncarlosbaez @j_bertolotti @RobJLow I'd be interested in y… |
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Post #AYRs27mQHKT3ozac2y by [email protected] |
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@carlk @SylviaFysica @j_bertolotti @RobJLow - the less smooth the potential fun… |
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Post #AYRtFOcB6AK3khgpWK by [email protected] |
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@j_bertolotti @johncarlosbaez @RobJLow but this also mean that after infinite t… |
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Post #AYRtFehjHIGneYPUOW by [email protected] |
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@KodeGhinn What happens after an infinite amount of time is of no consequence. … |
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Post #AYRtHLVHdXhggMOX4a by [email protected] |
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@j_bertolotti @KodeGhinn @johncarlosbaez You have no patience. |
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Post #AYRtHLZXNj6etYNvhg by [email protected] |
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@RobJLow @j_bertolotti @KodeGhinn - normal mathematicians would say it's me… |
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Post #AYRtOuloukbS5SjrSi by [email protected] |
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@johncarlosbaez @j_bertolotti @KodeGhinn Yes, you could consider how long it ta… |
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Post #AYRtVqz9NwlSNKHZwG by [email protected] |
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@carlk @SylviaFysica @johncarlosbaez @j_bertolotti I think that this exposes th… |
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Post #AYRtVr3P88AQaWGyZM by [email protected] |
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It's fun to compare @RobJLow's down-to-earth "physicist's answ… |
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Post #AYRwhN5ydmaH0jewka by [email protected] |
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@johncarlosbaez @carlk @SylviaFysica @j_bertolotti Though I'm aware that yo… |
