Unformatted text preview: , t = t 2sinh( ζ ) /α , x = x 2[cosh( ζ )1] /α . With τ 3 = 3 τ 1 , and t 3 = 3 t 1 we have in the ﬁnal ﬁve years ( ζ 3 = ζ 1 , x 3 = x 1 ) ζ = ζ 1 + α ( ττ 3 ) , 15 ≤ τ ≤ 20 y (slowing down) , t = t 3 + t 1 + sinh( ζ ) /α , x = x 1[cosh( ζ )1] /α . Remark: News from the spaceship, sent of at speed of light at its time τ , reaches earth at time t to earth = t + x ....
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This note was uploaded on 11/10/2011 for the course PHY 4241 taught by Professor Berg during the Spring '11 term at University of Florida.
 Spring '11
 Berg
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