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Brian Greene
@bgreene
Theoretical Physicist, Author, Co-founder , Professor of Mathematics & Physics, Columbia University
New York, NYbriangreene.orgJoined May 2012

Brian Greene’s Tweets

Tonight in Melbourne: Join me to explore how complex bags of particles--we humans--have revealed everything from the big bang, to black holes, to the mysteries of quantum reality...and beyond.
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Just landed back in Sydney, Australia (nice view from the plane) for tomorrow's event "The Twilight of Time" -- exploring everything from black holes and cosmology to life and consciousness. Looking forward to seeing you there. thinkinc.org.au/greene
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I asked ChatGPT to determine the physical distance from the event horizon of a Schwarzschild black hole in term of standard coords and the answer it gave had only one silly calculational error (on a senior undergrad quiz would have earned an A-). Impressive.
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The universality of mathematics as described by the great David Hilbert: "Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country."
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Love this, even though I disagree: "Either mathematics is too big for the human mind, or the human mind is more than a machine."--Kurt Gödel, among the greatest logicians of all time, died OTD 1978.
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Here's one shocking thing about quantum mechanics: As a particle travels, it explores every possible path, and what we observe is a particular melding of them all.
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To my mind, the biggest unsettled question in Quantum Mechanics is: How does the wavy probabilistic haze central to the mathematical formulation of the theory transform into the single definite reality of experience?
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"I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses."--Johannes Kepler, born OTD 1571.
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If you could travel to the past, you would not change anything. You would have always been part of that time. There are not two versions of a moment in time, one without you and one with you. Moments in time just ARE. They don't change.
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The famous Earth-rise image taken on Christmas Eve 1968 still fills me with optimism. The wonderful power of perspective. Happy Holidays to all.
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"It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring."--Carl Sagan, died OTD 1996.
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"The best that most of us can hope to achieve in physics is simply to misunderstand at a deeper level."--Wolfgang Pauli, pioneer of quantum physics and Nobel Laureate, died OTD 1958.
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Major scientific announcement expected tomorrow regarding the long sought milestone of harnessing nuclear fusion to create more energy than scientists put in--one step closer to poetically creating a small star here on Earth.
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The sun is not just a source of energy. It's a source of low entropy--highly ordered--energy. That’s what's essential in making the sun's energy useful.
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Werner Heisenberg, whose uncertainty principle established a central role for chance in the quantum laws of physics, born this week 1901. And that's certain.
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Visualizations of Einstein's general relativity often show space warping only "underneath" an object--this visual is better:
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This week in 1915: Albert Einstein completes the general theory of relativity, giving us one of the most beautiful equations ever conceived (LHS describes the curvature of spacetime, RHS describes the matter and energy in spacetime).
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The 2022 Nobel Prize in Physics has been awarded to Alain Aspect, John Clauser and Anton Zeilinger for their profoundly important work in quantum entanglement, which has changed our conception of reality.
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If you're in Australia or New Zealand in March/April 2023: Join me for a series of live events where we'll journey through the universe -- past to present and into the far future -- grappling with matter, mind, and the quest for meaning. Tix/Info:
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A contentious question at the heart of Quantum Mechanics: How does the nebulous, probabilistic, quantum haze transition into the definite reality of everyday experience?
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