Solution Found!
Light travels a certain distance in, say, 20,000 years.
Chapter 17, Problem 19E(choose chapter or problem)
Light travels a certain distance in, say, 20,000 years. How is it possible that an astronaut, traveling slower than light, could go as far in 20 years of her life as light travels in 20,000 years?
Questions & Answers
QUESTION:
Light travels a certain distance in, say, 20,000 years. How is it possible that an astronaut, traveling slower than light, could go as far in 20 years of her life as light travels in 20,000 years?
ANSWER:Solution 19E It’s possible because time is not an absolute entity as Galileo had taught us, but it’s relative. Time flows with different speeds depending upon how fast you are moving and the gravitational field you are in. but all these things are relative. In your rest frame time moves as usually. It’s the different frame of references for which your time varies. So, if light take 20000 years