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Speed Of Light

2002-05-05 23:22:56+00 by ziffle 5 comments

Intresting discussion of varous speeds of light. Its slower through water - wonder why?


What does light weigh?

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comments in ascending chronological order (reverse):

#Comment made: 2002-05-05 23:42:13+00 by: Dan Lyke

photons have an upper limit on their mass of 0.0000000000000006 electron volts, I was confused about electron volts as a measure of mass, but it's not that they have mass, it's that photons have energy and momentum.

Yeah, relativity confuses the hell out of me, too.

#Comment made: 2002-05-06 01:48:54+00 by: dexev

yes, but when solar sailing, how does one tack upwind?

#Comment made: 2002-05-06 02:02:27+00 by: Pete

Treating that as a serious question, the answer is you don't, you just trim and fall toward the source.

#Comment made: 2002-05-06 02:48:04+00 by: TheSHAD0W

Finding out the speed of light is easy. All you need is a microwave oven and some marshmallows.

#Comment made: 2002-05-06 23:06:02+00 by: TC

OMG let's start the whole wave v. particle debate again! BTW it is a particle :)