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Verlinde’s new theory of gravity passes first test

• jessriedel 10y ago
  Previously: https://news.ycombinator.com/item?id=13196488 https://news.ycombinator.com/item?id=13196488
• cft 10y ago
  http://motls.blogspot.ru/2011/08/once-more-gravity-is-not-entropic-force.html http://motls.blogspot.ru/2011/08/once-more-gravity-is-not-en... Apparently Verlinde's theory predicts neutron decoherence in the Earth's gravitational field, contradicting well established experimental results.
• mcguire 10y ago
  "Astronomers have measured, however, that at distances up to a hundred times the radius of the galaxy, the force of gravity is much stronger than Einstein’s theory of gravity predicts." So, gravity decreases at less than an inverse square of distance?
  • cdumler 10y ago
    No and yes. In the Dark Matter explanation, there is just more matter there that does not interact with electromagnetism. So, Einstein's' interpretation is right, we're just not seeing all of the matter. In Verlinde's explanation, Einstein is wrong, and gravity does not follow the inverse square law. I've been following Verlinde. I've being trying to grok his position, so this may or may not be right: I believe his argument is that gravity is an emergent phenomena that comes out entanglement. In "normal" space, entanglement has no restrictions so it behaves as Newton/Einstein expects. Gravity coming out of a black hole behaves differently and the curve of gravity (gravity versus distance) takes on a new shape flatter and more far reaching effect.