• Forward-in-time analysis of delayed-choice entanglement swapping

    Updated: 2025-01-21 21:06:30
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  • Uniform convergence of difference quotient in higher dimensions

    Updated: 2025-01-21 17:37:54
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  • Relevance of an orphaned equation

    Updated: 2025-01-21 16:26:59
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  • Axion production via Bremsstrahlung - Simple maths question

    Updated: 2025-01-21 14:48:41
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  • Another Time Dilation Question

    Updated: 2025-01-21 04:06:24
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  • Black Holes are Spinning Faster Than Expected

    Updated: 2025-01-20 19:15:16
    Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in A typical spiral galaxy grows by mergers and acquisitions . The central supermassive black holes in galaxies likely spent their early formative epochs feasting on a smooth diet of stars and gas . That history is reflected in their spin rates . AdobeStock . image Posted on January 20, 2025 January 20, 2025 by Carolyn Collins Petersen Black Holes are Spinning Faster Than Expected There’s a Universe full of black holes out there , spinning merrily away—some fast , others more slowly . A recent survey of supermassive black holes reveals that their spin rates reveal something about their formation . history If you want to describe a supermassive black hole’s characteristics ,

  • SR: GA Multivector vs. Tensor notation, Maxwell's equations

    Updated: 2025-01-20 18:24:57
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  • The risk of a superconducting cable exploding

    Updated: 2025-01-20 17:05:26
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  • Maximal atlas of topological manifold

    Updated: 2025-01-20 09:56:53
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  • Speed of Light for Bonnor Beam

    Updated: 2025-01-19 17:02:38
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  • How did the theory of quantum gravity begin?

    Updated: 2025-01-18 15:46:52
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  • Galilean spacetime as a fiber bundle

    Updated: 2025-01-17 14:34:26
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  • PV cell: understanding electron movement in the conduction band

    Updated: 2025-01-17 14:34:25
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  • Meteorite crash recorded on video in Canada

    Updated: 2025-01-17 06:24:16
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  • Strings 2025 conference

    Updated: 2025-01-13 21:33:36
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  • Time dilation and the human body

    Updated: 2025-01-10 05:36:22
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  • Accelerating particles with E-fields near current carrying conductors

    Updated: 2025-01-04 17:43:53
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  • Magnetohydrodynamics

    Updated: 2025-01-01 10:00:32
    Happy New Year! I recently wrote about how the Parker Solar Probe crossed the Sun’s ‘Alfvén surface’: the surface outside which the outflowing solar wind becomes supersonic. This is already pretty cool—but even better, the ‘sound’ here is not ordinary sound: it consists of vibrations in both the hot electrically conductive plasma of the Sun’s […]

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