Complete the sentences to describe the postulates of Einstein’s special theory of relativity.


Einstein’s special theory of relativity has two postulates.


The first postulate states that the laws of physics are the __________ in all uniformly moving reference frames.

The second postulate states that the speed of light in a vacuum has the same value for all ____________, regardless of the state of ___________of the observer or the source of light.

'SAME'
'OBSERVERS'
'MOTION'