- #1

wumple

- 60

- 0

## Homework Statement

Observers S and S' stand at the origins of their respective frames, which are moving relative to each other with a speed of .6c. Each has a standard clock, which, as usual, they set to zero when the two origins coincide. Observer S keeps the S' clock visually in sight. (a) What time will the S' clock record when the S clock records 5 micro seconds? (b) What time will Observer S actually read on the S' clock when his own clock reads 5 micro seconds?

## Homework Equations

time dilation: t = gamma (proper time)

## The Attempt at a Solution

I can solve part A by using time dilation. My confusion comes in understanding how to interpret the conditions set on part b - how is part b different from part A? I know that for time dilation, the proper time is the time measured when the clock is at rest. But how can I calculate what one observer sees on a clock in another frame?