What do we mean by time dilation in relativity?
A)It is the idea that time seems to run slower in reference frames moving relative to you,but time really is the same for everyone.
B)It is the idea that relativity makes time dilate,or expand,for people who study it.
C)It is a hallucinogenic effect experienced by people who take too much of something.
D)It is the idea that time really runs slower in reference frames moving relative to you.

Question

Quizplus · Accepted Answer

Time dilation in relativity refers to the phenomenon where time appears to move slower in reference frames that are moving relative to an observer. This is not just an illusion, but a real effect that has been observed and measured. So, choice D is the most accurate description of time dilation in relativity.

What Do We Mean by Time Dilation in Relativity