/sci/ - Science & Math

>>9683005
>Optics.
Why does a dispersive prism diffract light? Why are they triangular? Why do shorter wavelengths travel faster in a medium than longer wavelengths if all light moves at speed c in a vacuum?
>Biology
How can some organisms be essentially emergent properties of other organisms (living humans made of living cells)? Hot can we be made up of atoms, which are 99.99999 empty space, and still have coherent bodies?
>Physics and astronomy
Why does matter attract matter? Why do astral bodies move in orbits instead of just crashing in to one another? Why are orbits elliptical and not circular?
Why is our moon so much larger (relative to Earth) than any other planet's moon? Why is it almost exactly the same apparent size as our Sun?