Space-time can be curved? why can't we see it
[From: ] [author: ] [Date: 11-07-09] [Hit: ]
this cant be physically perceived. It can only be indirectly seen by things such as cosmic redshift.-Large masses bend (or curve) space. It can be seen in telescopes. Thats how theyre able to detect black holes, because the gravity is so immense.......
Using the curvature of the Earth here is not a good example. The universe is most likely globally spatial flat. The Earth is not. The universe is spatially flat, but curved in spacetime, this can't be physically perceived. It can only be indirectly seen by things such as cosmic redshift.
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Large masses bend (or curve) space. It can be seen in telescopes. That's how they're able to detect black holes, because the gravity is so immense. Try this experiment: place marbles on your bed all over the place. They represent planets. The mattress represents space. Next, place a heavy bowling ball in the center of the bed. What happens?
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I heard from this one physicist who says that it curves ever so slightly, so we can't detect it. That would be the reason why we don't know. As people have said earlier, space is also huge, so you can't see it.
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You'd need gravity goggles.
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we dont have the technology
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Because contact lenses are to expensive.
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