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Post AoO2174sMPYajIaIgi by [email protected] |
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More posts by [email protected] |
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Post #AoH2KSvbz6sNtSlAJM by [email protected] |
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As you're freely falling through the air you don't feel any force excep… |
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Post #AoH2zSYSHIlUblTZ8S by [email protected] |
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@johncarlosbaez One of my favourite black hole fun facts! |
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Post #AoH39GEyusS1JR2bC4 by [email protected] |
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@johncarlosbaez I believe this process is called spaghettification |
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Post #AoH7I4ChRDCQP6QbAG by [email protected] |
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@johncarlosbaez :>water on the sunny side of the Earth is pulled toward the … |
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Post #AoH87NRvduTYrV1B2G by [email protected] |
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@johncarlosbaez isn't the wind resistance much stronger than the gravitatio… |
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Post #AoH9PeHNuMHuE3MX56 by [email protected] |
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@johncarlosbaez "We could be falling through the event horizon of a truly … |
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Post #AoHAHffyvmseC9cxsW by [email protected] |
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@clusterfcku - yes, the wind resistance vastly exceeds the tidal forces for a p… |
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Post #AoHCfimPF91KgAECky by [email protected] |
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@BartoszMilewski - if you fall through the event horizon of an enormous black h… |
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Post #AoHGMi9fk2Ex3XIkYi by [email protected] |
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@johncarlosbaez If my hand doesn't disappear, it means I can see things in … |
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Post #AoHM5xlp1wcsHvXiMK by [email protected] |
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@BartoszMilewski - light never comes out through the horizon, yet your outstret… |
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Post #AoHNUau1HzXOYhgbJo by [email protected] |
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@BartoszMilewski - both these questions can be answered using the Penrose diagr… |
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Post #AoHOuEW9ErEKcGJGXQ by [email protected] |
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@TobyBartels @johncarlosbaez Just to add some quantitative pedantry, the tidal … |
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Post #AoHOuEgmbJjl9FHl7A by [email protected] |
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@RobJLow @johncarlosbaez : So when a supervillain threatens to destroy the Moo… |
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Post #AoHOuEpe4MpHajQpvc by [email protected] |
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@TobyBartels @johncarlosbaez Well, it might not be top of the list of things to… |
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Post #AoHOuF1LMsBSB0uBA8 by [email protected] |
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@RobJLow @TobyBartels - since the Moon is held together by its gravity, I'm… |
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Post #AoHP9cJ14pZmjnVFWC by [email protected] |
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@TobyBartels wrote: "You probably know this, but it seems weird to focus o… |
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Post #AoHPlLNqRQEPG6kdHM by [email protected] |
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@johncarlosbaez @BartoszMilewski When I read the sentence, "We could be fa… |
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Post #AoHTr7ooBkfQk2NKjY by [email protected] |
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@johncarlosbaez says"We could be falling through the event horizon of a tr… |
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Post #AoHgSFSfvxDmbuUV0K by [email protected] |
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@johncarlosbaez @BartoszMilewski also, on a side note: It just occurred to me t… |
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Post #AoHgSFZlVatOxtoA3U by [email protected] |
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@vacuumbubbles @BartoszMilewski - You're right, Vanessa, this business abou… |
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Post #AoHhI2bYynFbnKLR9k by [email protected] |
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@MartinEscardo - to not notice that we were falling into an enormous black hole… |
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Post #AoHti5Kef2mTEScZgu by [email protected] |
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@johncarlosbaez But presumably @BartoszMilewski's statement that "you&… |
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Post #AoHurUvaxvm9B0x5OK by [email protected] |
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@johncarlosbaez @MartinEscardo : And if we're falling into a black hole ju… |
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Post #AoI5kRALeZjmyfgk4G by [email protected] |
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@internic @BartoszMilewski - right, as you approach the horizon it looks dark e… |
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Post #AoI6DJpM187ocCdlUu by [email protected] |
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@TobyBartels @MartinEscardo - the entire observable universe could be falling i… |
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Post #AoI6eqYiQi5Lwuz53Q by [email protected] |
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@RobJLow @TobyBartels @johncarlosbaez And the coolest tidal fact of all (which … |
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Post #AoI6eqizoUJCSnnI4u by [email protected] |
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@gregeganSF @RobJLow @johncarlosbaez : Neat! Above, when I described the Moon… |
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Post #AoI6eqtHCGX2ygbV6O by [email protected] |
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@TobyBartels @gregeganSF @RobJLow @johncarlosbaez The Road to Reality makes thi… |
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Post #AoI6er1Qhx3PNyQ0oK by [email protected] |
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@abecedarius @TobyBartels @gregeganSF @RobJLow - that's a really cool thing… |
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Post #AoIHdkvOzUEzgKHISu by [email protected] |
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@johncarlosbaez @BartoszMilewski I just looked it up, and I seem to have misrem… |
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Post #AoILCqWuRXhd3yFIR6 by [email protected] |
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@johncarlosbaez @MartinEscardo : The sky facing the black hole wouldn't be… |
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Post #AoIT4H5B9PJIRShNRI by [email protected] |
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@johncarlosbaez @internic This is NASA simulation of a fall into a black hole. … |
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Post #AoIUWri0fVIg6C3gf2 by [email protected] |
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@johncarlosbaez @internic So you see my confusion: If the approaching horizon l… |
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Post #AoJ7hY7xhys8lYHbZw by [email protected] |
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@BartoszMilewskiAs far as I understand GR, even long before you actually arrive… |
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Post #AoJ7hYIF5l5zHR5obQ by [email protected] |
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@j_bertolotti @BartoszMilewski Right. The situation with your arm is different… |
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Post #AoJ7hYSWTXJpnJu1cu by [email protected] |
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@internic @j_bertolotti @johncarlosbaez Let's simplify the problem. Two obs… |
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Post #AoJ7hYbNwaPMEo36RM by [email protected] |
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@BartoszMilewski @j_bertolotti @johncarlosbaez No, from the perspective of the … |
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Post #AoJ7hYi7XXnOZhCTwG by [email protected] |
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@internic @BartoszMilewski @j_bertolotti - Nick is right. |
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Post #AoJ9H1ck8J8gKyA12G by [email protected] |
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@johncarlosbaez @MartinEscardo I’m not a physicist but I do find it curious t… |
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Post #AoJ9H1kXfJNSj9oFBw by [email protected] |
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@emily - the order-of-magntitude similarity between • the Schwarzschild radiu… |
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Post #AoJAOdCOvaYkr71vBg by [email protected] |
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@johncarlosbaez @internic @j_bertolotti I'm trying to visualize this. Right… |
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Post #AoJJlUATZQJX5u6OXo by [email protected] |
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@BartoszMilewski @internic @j_bertolotti - but they're redshifted to oblivi… |
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Post #AoJKcWyTrlz998mkyW by [email protected] |
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@johncarlosbaez @BartoszMilewski This is why I have problem with the firewall i… |
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Post #AoJNFwx3Pz6Kum2gQS by [email protected] |
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@johncarlosbaez @internic @j_bertolotti So back to the original question: Can y… |
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Post #AoJOUW2VrH3HkM6ZU0 by [email protected] |
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@johncarlosbaez @TobyBartels @gregeganSF @RobJLow At Catalina Island once I cou… |
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Post #AoJOVN46i4oqCeG5pI by [email protected] |
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@johncarlosbaez @j_bertolotti I would expect the movie @BartoszMilewski posted… |
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Post #AoJbLpFqLYwG8fWimW by [email protected] |
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@BartoszMilewski @internic @j_bertolotti - the larger the black hole the harder… |
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Post #AoJj4pdmSQ7O2x8BCy by [email protected] |
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@johncarlosbaez @internic @j_bertolotti So what do you see when you look toward… |
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Post #AoJmXuzpvKBUux0aRs by [email protected] |
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@BartoszMilewski - I hope you read this... another branch of this sprawling thr… |
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Post #AoLDOZzVXkEL5KaOem by [email protected] |
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@BartoszMilewski @johncarlosbaez @internic @j_bertolotti a little bit off topic… |
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Post #AoLDOa6x64BXSQ4LGC by [email protected] |
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@davidsuculum - have you read Gravitation by Misner, Thorne and Wheeler, or Gen… |
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Post #AoLDjBPC9CY4unQRUG by [email protected] |
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@BartoszMilewski Your personal clock is only a tiny bit redshifted from the thi… |
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Post #AoLDjBUro75NCO4yKO by [email protected] |
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@4raylee @BartoszMilewski @internic @j_bertolotti - one crucial thing, when doi… |
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Post #AoLSOef7fsSSsvXrI8 by [email protected] |
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@johncarlosbaez @4raylee @internic @j_bertolotti I'm interested in a free f… |
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Post #AoLc66FFtgpeTGEk7c by [email protected] |
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@RobJLow @BartoszMilewski - as far as I'm concerned, the firewall hypothesi… |
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Post #AoLq0Gdxio1iLGuFuK by [email protected] |
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@RobJLow @johncarlosbaez have you ever read Chandrasekhar? Wald seems much more… |
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Post #AoLqWJzcnuzlzrK72O by [email protected] |
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@davidsuculum @RobJLow - I could never fight my way through Chandresekhar's… |
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Post #AoLqhkrJG2cSVNsz0i by [email protected] |
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@johncarlosbaez @davidsuculum @RobJLow When I was a kid I had some magazines or… |
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Post #AoLqxfUOzNkmU9l7po by [email protected] |
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@dpiponi - Nice! Like travel brochures.@davidsuculum @RobJLow |
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Post #AoM6sPkffjfFUjsxpQ by [email protected] |
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@BartoszMilewski @johncarlosbaez @internic : You never see your hand (or anyth… |
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Post #AoM6sPuF69JvyQMbkO by [email protected] |
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@TobyBartels @BartoszMilewski @internic - I told Bartosz to contemplate the Pen… |
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Post #AoMA2R1Y63GUCOFXtY by [email protected] |
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@johncarlosbaez @TobyBartels @BartoszMilewski @internic I did a long set of cal… |
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Post #AoMF15UbAEmItx0wuu by [email protected] |
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@gregeganSF - by the way, your page makes me a bit sad that I went along with C… |
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Post #AoMI4p94BVW9DpPrbk by [email protected] |
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@johncarlosbaez @gregeganSF : It's also on the Wayback Machine (just barel… |
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Post #AoMIPaUrqGfXs8Vwlk by [email protected] |
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@TobyBartels @gregeganSF - thanks, Toby. I have no idea what became to Chris.… |
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Post #AoMPDPp0PDQsy44obY by [email protected] |
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@BartoszMilewski @johncarlosbaez @internic @j_bertolotti the event horizon is a… |
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Post #AoMPDPyZpd5ZRkYSWW by [email protected] |
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@sergedroz @BartoszMilewski @internic @j_bertolotti - right! Your example sho… |
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Post #AoMaSLQw6OnzCJ8j8i by [email protected] |
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@johncarlosbaez @TobyBartels @gregeganSF Oh no! I'd no idea that had happen… |
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Post #AoMxwQ6pa2jjKf2ttI by [email protected] |
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@johncarlosbaez @TobyBartels @internic Yes, it takes practice to read Penrose d… |
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Post #AoO0M7yO1jVjgBRSc4 by [email protected] |
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@BartoszMilewski @johncarlosbaez @TobyBartels @internic If you mean the world l… |
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Post #AoO0M8G6xpgmZ9jcEy by [email protected] |
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@gregeganSF @johncarlosbaez @TobyBartels @internic The scenario I'm interes… |
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Post #AoO0Oz37f3TAs81F4K by [email protected] |
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@BartoszMilewski @johncarlosbaez @TobyBartels @internic OK, Alice jumps first, … |
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Post #AoO0OzD349PRMufAXY by [email protected] |
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@gregeganSF @johncarlosbaez @TobyBartels @internic Assume that they are both fa… |
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Post #AoO0OzMGVsmXpUyWuG by [email protected] |
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@BartoszMilewski @johncarlosbaez @TobyBartels @internic OK, I see what’s trou… |
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Post #AoO0OzV7yvs4Gz7bii by [email protected] |
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@gregeganSF @johncarlosbaez @TobyBartels @internic I think we have to assume th… |
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Post #AoO0OzhBG7VosMlEVU by [email protected] |
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@BartoszMilewski wrote:"I think we have to assume that "passing the h… |
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Post #AoO216vIvztuFc6elk by [email protected] |
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@gregeganSF @BartoszMilewski @johncarlosbaez @TobyBartels @internic This whole … |
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Post #AoO2174sMPYajIaIgi by [email protected] |
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@j_bertolotti @gregeganSF @BartoszMilewski @johncarlosbaez @TobyBartels I agree… |
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Post #AoO217F9kBmRFBOViC by [email protected] |
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@internic @j_bertolotti @gregeganSF @BartoszMilewski @TobyBartels - I don't… |
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Post #AoO4GYslSvAfDTPiAy by [email protected] |
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@BartoszMilewski @johncarlosbaez @TobyBartels I wonder if it might be helpful … |
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Post #AoO4GZ32qhOVjMDvCS by [email protected] |
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@internic wrote: "I'll leave it to others whose GR is stronger than mi… |
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Post #AoOS7m2hZ3BuKGP7qK by [email protected] |
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@johncarlosbaez @BartoszMilewski @gregeganSF @TobyBartels @internic Hmm, I don&… |
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Post #AoOWk2cUmJNEYneJfs by [email protected] |
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@GerardWestendorp @johncarlosbaez @BartoszMilewski @TobyBartels @internic Time … |
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Post #AoOWk2mQBPJV3aIF96 by [email protected] |
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@GerardWestendorp - the time reverse of a black hole is a white hole. In a bla… |
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Post #AoOaHPd8XyMZLPYNSy by [email protected] |
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@mojala - I'd never seen it before - thanks! It seems completely different… |
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Post #AoOajCPZHuHmSHSN1s by [email protected] |
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@johncarlosbaez @GerardWestendorp @BartoszMilewski @TobyBartels @internic @greg… |
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Post #AoP00QS4pvolmHwPEu by [email protected] |
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@johncarlosbaez @gregeganSF @TobyBartels @internic "No, the event horizon … |
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Post #AoPRKiKilGQdn2OnoW by [email protected] |
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@BartoszMilewski @johncarlosbaez @gregeganSF @internic :>A free falling obse… |
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Post #AoPRKiYBxBCiSohYoK by [email protected] |
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@BartoszMilewski @johncarlosbaez @gregeganSF @internic (2/3):As we approach the… |
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Post #AoPRKii7MH8yxbLUHY by [email protected] |
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@BartoszMilewski @johncarlosbaez @gregeganSF @internic (3/3):Anyway, as Bob fal… |
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Post #AoPRKiskijePUaJyrI by [email protected] |
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@TobyBartels @johncarlosbaez @gregeganSF @internic "So he sees Alice reach… |
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Post #AoPRKj0CH3bbrfnvSi by [email protected] |
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@BartoszMilewski - I think you're treating the horizon as something you see… |
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Post #AoPRr2FiEnAEppT6ES by [email protected] |
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@TobyBartels wrote:"So he sees Alice reach the horizon at exactly the same… |
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Post #AoPTEsTuJkl3R12aEi by [email protected] |
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@BartoszMilewski @TobyBartels @johncarlosbaez @gregeganSF @internic He sees her… |
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Post #AoPTEseXgDGTy014oS by [email protected] |
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@BartoszMilewski @TobyBartels @johncarlosbaez @gregeganSF @internic If Bob coul… |
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Post #AoPTEskvIUMwHn0Al6 by [email protected] |
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@glocq wrote:"f Bob could see the horizon, at the moment he crossed it, he… |
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Post #AoPUUIhhCnrb3mPN8S by [email protected] |
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@johncarlosbaez I think you explained it well by saying that it's a surface… |
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Post #AoPUqXoRiBdmI3Ajbs by [email protected] |
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@glocq @BartoszMilewski @TobyBartels @gregeganSF @arxiv_math I wrote: "You… |
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Post #AoPUzQARVQ2JBXh4Fs by [email protected] |
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@johncarlosbaez @BartoszMilewski @TobyBartels @gregeganSF @internic Thank you, … |
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Post #AoPVF6GPH8Lu5VxYUy by [email protected] |
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@BartoszMilewski - I guess it's not a fixed sphere, though I don't even… |
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Post #AoPVcW2Rbxw8ggauK8 by [email protected] |
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@glocq - I wrote this elsewhere a minute ago:"Things get more tricky if we… |
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Post #AoPWEkbpsySWslNdWi by [email protected] |
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@johncarlosbaez Ahh you're right, I didn't think about that. So I guess… |
