groovychk: (science)
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Physicist to Present New Exact Solution of Einstein's Gravitational Field Equation

http://www.physorg.com/news10789.html

New antigravity solution will enable space travel near speed of light by the end of this century, he predicts.
On Tuesday, Feb. 14, noted physicist Dr. Franklin Felber will present his new exact solution of Einstein's 90-year-old gravitational field equation to the Space Technology and Applications International Forum (STAIF) in Albuquerque. The solution is the first that accounts for masses moving near the speed of light.

Date: 2006-02-14 09:43 am (UTC)
From: [identity profile] kyrie1618.livejournal.com
... i actually buy this, i do...

so how would we expect this field to behave? my money's on:

1: it's proportional to the mass of the Big Moving Mass

2: it's proportional to gamma(v) where v is the difference in velocity between observer and the Big Moving Mass - this would mean that an object actually in the beam would feel nothing unusual, nor would an observer flying alongside, but back on earth we'd see a big effect.

3: it spreads and diminishes in an inverse-square way, so you might want to be closer to the Big Moving Mass

4: it can never actually be stronger than the gravity of the big moving mass. if it could, then the frame of the spaceship "hitching a ride" wouldn't look right. here's hoping i'm wrong, or this won't be very useful.

5: the antigravity beam also extends backwards - so if you want to hitch a ride you'd have to be in front. maybe there's a use for the reverse beam... slowing down and getting off the ride?

but I want to See the Paper.

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