2007-08-28 09:52:26 · 4 answers · asked by jake C 2 in Science & Mathematics ➔ Physics
Professor Ulf Leonhardt and Dr Thomas Philbin of the University's School of Physics & Astronomy believe that they can engineer the Casimir force of quantum physics to cause an object to repel rather than attract another in a vacuum.
2007-08-29 15:12:32 · update #1
Gravity is caused by the attraction of two bodies with mass toward each other.
A vacuum is the absence of atmosphere, either artificially (as in a chamber whose atmosphere has been pumped out) or naturally (as occurs in space beyond the atmosphere of any planet).
The two concepts are essentially unrelated.
Gravity cannot be "reversed" -- it is a fundamental force of the universe that draws massed bodies towards each other. Gravity can be overcome, by the application of other forces, but it cannot be reversed.
2007-08-28 10:01:16 · answer #1 · answered by dansinger61 6 · 0⤊ 0⤋
WHAT? why even ask. They have no effect on each other.Gravity has no reverse. If some thing is going up it's not gravity in reverse.It is or was propelled somehow.
2007-08-28 17:05:43 · answer #2 · answered by on my own again 2 · 0⤊ 0⤋
All of our theories, as well as all of our evidence, say that gravity is always attractive. How are you thinking a vacuum would be relevant?
2007-08-29 02:37:52 · answer #3 · answered by Frank N 7 · 0⤊ 0⤋
no
2007-08-28 16:58:54 · answer #4 · answered by peter d 2 · 0⤊ 0⤋