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Weblog van Spruit

Goal in life: Create order, think lateral.

Friday, December 25, 2009

Space time continuum in 3D?

On the web there are a lot of images of the space time continuum according to the rubber sheet and ball parable. Like this one.

Since the world, and the universe, is not flat I have great trouble getting my head around curvature of space time when looking at it this way.

Fortunately I found this image, which is more like I imagine it. Thanks Vast.

Does anyone else have a good 3D depiction of the curvature of space time?

Space time is probably not curved, but stretched or varying in density, which causes light and time to pass through it in a curved way. The first image would push anything moving along the lines of space time, like light, away from the object. Whilst, according to the theories I have seen it should be attracted by the object and following its course in a different direction than before reaching the object.

I am looking for a parable with liquid or gas in which an object changes the density of the liquid or gas. A bit like twirling your finger around under water (not at the surface). This seems to be sort of what a rapidly spinning black hole does with space time.

The rubber sheet and ball parable is wrong and confusing.

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#1493520681891744394 posted by Arie

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