ABSTRACT
The principle of relativity is the principle that all physical phenomena would appear to be exactly the same if all the objects concerned were moving uniformly together at velocity v; that is, no experiments made entirely inside of a closed spaceship moving uniformly at velocity v (relative to the center of gravity of the matter in the universe, for example) can determine this velocity. The principle has been verified experimentally. Newton’s laws satisfy this principle; for they are unchanged when subject to a Gallilean transformation, x ′ = x − vt y ′ = y z ′ = z t ′ = t https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429493249/61533138-873a-4296-94b7-142295055bcb/content/eq102.tif"/>
