{"page":"\n\n
\n
\n
\n
\n
\n\nVideo\n
\n

\nHow Black Holes Spin Space Time\n

\n
\n
\nGet Free Access for 10 Days!\n
\n
\n
\n
\n
\n
×
\n\n\n
\n\nPublisher:\n\nPBS\n\n\n
\n
\nIf there’s one thing cooler than a black hole it’s a rotating black hole. Why? Because we can use them as futuristic power generators, galactic-scale bombs, and portals to other universes. Black holes are self-sustaining holes in the...\nIf there’s one thing cooler than a black hole it’s a rotating black hole. Why? Because we can use them as futuristic power generators, galactic-scale bombs, and portals to other universes.

Black holes are self-sustaining holes in the fabric of spacetime. Space at the event horizon cascades downwards, dragging more space behind it, sort of like how water drags itself near the edge of a waterfall. In a Kerr black hole, space above the event horizon is dragged around in a circle - so less waterfall and more whirlpool. Water spiraling down a drain in a flat sink doesn’t know about the hole - it only knows about the motion of the water around it. In fact it’s possible to construct a black hole in general relativity rotating or otherwise - without any mass. Warp spacetime so it looks like the exterior of a black hole, and that warping will persist. So what is rotating? Spacetime is rotating.\n
\n
\n\n
\n
\n
\n
\n

Resource Details

\n
\n
\n
\n
Curator Rating
\n
\n
\n
\n
\n
\n
Educator Rating
Not yet Rated
\n
\n
\n
\n
\n
Media Length
\n
12:49
\n
\n
\n
\n
\n
Grade
12th - Higher Ed
\n
\n
\n
\n
\n
Subjects
Science
5 more...
\n
\n
\n
\n
\n
Media Type
Instructional Videos
\n
\n
\n
\n
\n
Source:
\n
\nPBS Space Time\n\n
\n
\n
\n
\n
\n
Date
\n
2020
\n
\n
\n
\n
\n\n
Language
English
\n
\n
\n
\n
\n
Audiences
For Teacher Use
2 more...
\n
\n
\n
\n
\n
Usage Permissions
Fine Print: Educational Use
\n
\n
\n
\n
\n
\n

Additional Materials

\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Transcript\n
\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Preview\n
\n
\n
\n

Concepts

\n
\n
space, quantum mechanics, time, gravitational field, electric charge, kinetic energy, energy, mass, light, black holes, outer space, astrobiology, the universe, science fiction
\n
\n\n\n
\n
\n
\n
\n

Additional Tags

\n
\n
physics, astrophysics, space physics, pbs, space time, pbs space time, matt o’dowd, einstein, einsteinian physics, general relativity, special relativity, dark energy, dark matter, math, calculus, maths, holographic universe, holographic principle, rare earth, anthropic principle, weak anthropic principle, strong anthropic principle, black hole, event horizon, 1st place, frame dragging, rotational energy, rotating case, rotating mass, rotating, universe, real, half, direction, case, quasars, process, flow, object, spin, ergosphere, universes
\n
\n\n\n
\n
\n
\n
\n

Classroom Considerations

\n
Video is ad-free
\n
\n
\n

Educator Ratings

\n
\n
\n
\n
\n
\n\nShow resource details\n
\n
\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: How Black Holes Spin Space Time\" href=\"/subscription/new\">\"How\n\n
\n
\n
\n\n\n\n"}