The Meaning of the Phrase "Space Is Relative" Is That

question 78

Multiple Choice

The meaning of the phrase "space is relative" is that

• A) all observers measure the same speed for a lightbeam.
• B) two observers, in different reference frames, observe different lengths for the same object.
• C) two observers, both in the same reference frame, observe different lengths for different objects.
• D) two observers, in different reference frames, observe different lengths for different objects.
• E) two observers, both in the same reference frame, observe different lengths for the same object.