Well connected: an optical clock at PTB was used in the comparison. (Courtesy: PTB) Atomic clocks in France, Germany and the UK have been used to perform the best-ever confirmation of time dilation as ...

The theories of Prof. Albert Einstein and those of other theoretical physicists and mathematicians were attacked here this week-end by Viscount Samuel, who has been president of the Royal Institute of ...

To make the admittedly weird concept of relativity easier to understand, a team of developers has created a video game that slows down the speed of light. Relativity is the theory that space and time ...