Archive for the ‘ Physics ’ Category

what is the procedure to measure distance to space objects?

heinz l asked:


what kind of instrument or range finder is needed to measure the distance to an object in space,when we are talking about billions of light years,the object may not even be there anymore.?

Garrett

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This entry was posted on Sunday, March 8th, 2009 at 2:34 pm .

will IR (infrared) work when spinning fast

werty asked:


if a sharp range finder spins fast in circles will it still detect things
what if there where more than one trasismiter and recivers

Josue

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This entry was posted on Wednesday, March 4th, 2009 at 9:23 pm .