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Chirp! is a GNU Social instance for the Cooley and Sekula families and their friends.

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Animated gif showing a photon as a red, trailing curve, winding around the region outside a rotating black hole. Sliders control the amount of rotation of the black hole, and the radius of the orbit (in Boyer-Lindquist coordinates).

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  1. Robert McNees (mcnees@mastodon.social)'s status on Wednesday, 26-Jul-2023 15:57:04 UTC Robert McNees Robert McNees
    in reply to

    The structure of spacetime around a Kerr black hole leads to lovely and complex orbits.

    Check out @duetosymmetry’s app that lets you visualize the orbits of a photon outside a rotating black hole:

    https://duetosymmetry.com/tool/kerr-circular-photon-orbits/

    In conversation Wednesday, 26-Jul-2023 15:57:04 UTC from mastodon.social permalink
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Chirp! is a social network. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.

Creative Commons Attribution 3.0 All Chirp! content and data are available under the Creative Commons Attribution 3.0 license.