There is no physical law to prevent time travel - nothing in physics to say that it is not possible. So surely the invention of a time machine is just a matter of ... time?
In Build Your Own Time Machine, acclaimed science author Brian Clegg takes inspiration from his childhood heroes Doctor Who and H. G. Wells to explain the nature of time. How do we understand it and why measure it the way we do? How did the theories of one man change the way time was perceived by the world? Why wouldn't H. G. Wells's time machine have worked? And what would we need to do to make a real one? Brian Clegg applies the most famous of Einstein's theories, special and general relativity, to the laws of time to show the real science of time travel and how possible it really is.
