>In Derek's example the switch and the bulb are 1 meter away from each other and therefore the time is 1/c seconds, i.e the time light takes to travel 1 meter.
Perhaps I didn't make my example clear. Imagine loop with 2 switches...one switch 1 LY away...another switch 1 meter away.
Derek flips the 1m switch and light instantly turns on: What does that tell you?
Derek flips the 1m switch and light doesn't turn on: What does that tell you?
How were you able to find out that information before waiting 1 yr?
Perhaps I didn't make my example clear. Imagine loop with 2 switches...one switch 1 LY away...another switch 1 meter away.
Derek flips the 1m switch and light instantly turns on: What does that tell you? Derek flips the 1m switch and light doesn't turn on: What does that tell you?
How were you able to find out that information before waiting 1 yr?