To create a rainbow, is sunlight bouncing off the outside of a raindrop or the inside of raindrop?

i think it would have to be inside

Explanation:

bc the light has to be refracted (aka has to be inside water)at a angle to see a rainbow with are eyes

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

e/c, where e is its total energy