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...
25 February 2008
10 February 2008
How do Electric Eels avoid shocking themselves?
10 February 2008
03 February 2008
How is oxygen made and recycled on the International Space Station?
27 January 2008
Could a plane take off on a 'treadmill' runway?
20 January 2008
谁会更快随心所欲的下坡,一个胖cyclist of a thin cyclist?
13 January 2008
I’ve always wondered, when lightning hits water does it go with a splash? I’ve asked several of my professors and none...
13 January 2008
13 January 2008
How does a boomerang work? Is it the shape or the technique that makes it come back? Would any old stick, thrown in...