Consider the grid of clocks in Figure 14.6. Do observers stationed at clocks far from the reference clock read earlier, later, or the same time as the time on the reference clock 

\((a)\) if the clocks are to be synchronized after a pulse is sent out activating them but this pulse has not yet been sent, and 

\((b)\) if the pulse has been sent out and all clocks are running?

(c) Suppose the pulse has been sent and all clocks are running. If you stand at the reference clock and use a telescope to read the time on distant clocks, do you read a time earlier, later, or the same as the time on the reference clock?

Data from Figure 14.6

Transcribed Image Text:

1 grid unit event reference clock (at origin) Nearest clock measures instant of event.