Re: Speed of Light

Dear jillbones:

jillbones wrote:
Eric Gisse wrote:
jillbones wrote:
A vessel 300,000,000 meters wide is traveling at
near light speed. > .99 c

Presumably wrt the Earth... ?

Would the time required for a photon to travel from

.... "light signal" to travel from ...

one side of the ship to the other side be ;

(1) One second according to the ship's clock? or
(2) One second according to a clock on Earth? or
(3) One second according to both clocks? or
(4) Some arbitrary time not related to the nominal
speed of light?

How about (5) ?

(5): We won't do your homework for you

In other words, you CANT answer the question!

The answer is (1) and not {(2), (3), or (4)}.

The path for (2) is "much" longer than the path for (1), since the ship
moves a very significant distance forward between the time of emission
at one end, and the time of detection at the other.

For more on the topic, consider the gedanken of a light signal being
bounced back and forth transverse to the mirrors' motion. You have
exactly half of this.

Assuming this wasn't just a multiple guess question that you didn't
want to think about.

David A. Smith

.

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