Time and Size

1. Apr 1, 2013

capcom1983

Is there a correlation between time and size? Say there was a being the size of a planet (our observer) would our time on earth seem to pass quicker to the observer or would it be the same?

2. Apr 1, 2013

ghwellsjr

Light travels at about 1 foot per nanosecond. You could do an experiment on a six-foot lab bench and measure the time it takes for light to travel the length of the bench and back as 12 nanoseconds. If you were six feet tall, would that have any bearing on your measurement?

Now if your nerves carried signals at the speed of light and your brain could process information really fast, you might have a hard time walking because there would be a 12 nanosecond delay between your eyes and brain telling your foot to avoid that hole in the ground and you seeing your foot reacting. So your huge observer would have similar issues but keep in mind that gravity would collapse any such being into a near-perfect sphere, just like planets are so it's really something that is impossible to happen.

3. Apr 1, 2013

Thanks

4. Apr 1, 2013

Naty1

Code (Text):
Say there was a being the size of a planet (our observer) would our time on earth seem to pass quicker to the observer or would it be the same?
There is a correlation [from general relativity] between gravitational potential and the passage of time. For example, time appears to pass more slowly on our sun than on earth.

There is also another correlation between relative speeds [from special relativity].

5. Apr 1, 2013

capcom1983

Thanks as well I'm new to physics (at 30) as my major was in psychology and minor anatomy so any help would be great