What, or when, would aliens see, if they looked at the earth?
Answers to Physics Questions
Physics, cosmology, astrophysics, electricity, energy, forces, gravity, light and maths...
01 June 2008
Why does the road surface appear to shimmer when it’s hot?
01 June 2008
How does a didgeridoo do what it does do?
11 May 2008
Why do ear plugs amplify internal noises?
20 April 2008
Should you unplug your TV in a thunderstorm?