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| Tags: futuristic, past, used |
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#1
May 11th 04
posted to rec.org.mensa,sci.physics.relativity
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A used futuristic past.
"geopelia" wrote in message ... "PSmith9626" wrote in message ... Dear geo, Not from the perspective ( aka frame) of the person doing the riding--only as observed by a standing still observer. best penny Approaching the speed of light, doesn't mass increase and length decrease? I wouldn't like to weigh several tons and be squashed flat! So it's safe to go as fast as I like! Nice to know, thanks. Even approaching the speed of light, we would be limited by the human lifespan. We could never get anywhere more than a hundred light years away ourselves, but our descendants might. Actually, this is very incorrect. Depending how close you are to the speed of light, your time passes more slowly. You could cross the galaxy in an arbitrarily short amount of time as you measure it. www.google.com "how to use google" http://math.ucr.edu/home/baez/physic...SR/rocket.html http://math.ucr.edu/home/baez/physics/ http://math.ucr.edu/home/baez/physic...spaceship.html http://scienceworld.wolfram.com/physics/ProperTime.html Note followups. SNIP 
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#2
May 13th 04
posted to rec.org.mensa,sci.physics.relativity
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A used futuristic past.
"Michael Varney" wrote in message ... "geopelia" wrote in message ... "PSmith9626" wrote in message ... Dear geo, Not from the perspective ( aka frame) of the person doing the riding--only as observed by a standing still observer. best penny Approaching the speed of light, doesn't mass increase and length decrease? I wouldn't like to weigh several tons and be squashed flat! So it's safe to go as fast as I like! Nice to know, thanks. Even approaching the speed of light, we would be limited by the human lifespan. We could never get anywhere more than a hundred light years away ourselves, but our descendants might. Actually, this is very incorrect. Depending how close you are to the speed of light, your time passes more slowly. You could cross the galaxy in an arbitrarily short amount of time as you measure it. www.google.com "how to use google" http://math.ucr.edu/home/baez/physic...SR/rocket.html http://math.ucr.edu/home/baez/physics/ http://math.ucr.edu/home/baez/physic...spaceship.html http://scienceworld.wolfram.com/physics/ProperTime.html Note followups. SNIP Thank you for these very informative websites. Geopelia
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