Question: Traveling on a light beam. When he was first thinking about relativity (and before he developed his theory), Einstein considered how the universe would look

Traveling on a light beam. When he was first thinking about relativity (and before he developed his theory), Einstein considered how the universe would look to a person who traveled on a light beam. uppose you are traveling on a light beam when you encounter a friend who is traveling on a second light beam in the opposite direction. What is your friend’s speed relative to your reference frame?

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