questions about light

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Article #925

#925

From: Eric Rude
Date: Tue, 26 Apr 1994 04:21

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Hello.
the physics students at Pocatello High School asked me to post these five
questions in hope that someone might have some answers:
1. If light is a particle, how can it travel at the speed of light
without becoming an infinite mass?
2. If light is a particle, when it leaves a flashlight why doesn't it
have enough momentum to push the flashlight backward?
3. relativity states that to the observer, the mover's time always goes
slower. Then how can one person's clock be ahead of the other's,
considering that either one could be considered the mover or the observer?
4. If you could stand in a black hole and shine a light straight up,
would the light escape, turn around and come straight back down, or orbit
to the right or left?
5. If we could travel at speeds greater than the speed of light, could we
travel back in time?

Thanks in advance!

--
Eric Rude	Pocatello High School
325 N. Arthur, Pocatello, ID 83204-3101
rudeeric@cwis.isu.edu
(208)-233-2056

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From: rudeeric@cwis.isu.edu (Eric Rude)
Newsgroups: k12.ed.science,bit.listserv.physhare
Subject: questions about light
Date: 25 Apr 1994 22:21:49 -0600
Organization: Idaho State University, Pocatello
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