Which is the definition of refraction

Refraction is the change of direction that a light ray experiences when passing from a transparent medium (water, glass, air) to another where the velocity of propagation of the wave is different. For example, light propagates more slowly in any medium than in a vacuum. Based on this, there are indices of refraction for each material, which are actually a comparison between the speed of light of a transparent medium and that of the vacuum. For example, the refractive index of water is 1,333. This means that in a vacuum the speed of light is 1,333 times faster than in water. Therefore when a ray of light passes from a medium like air to water, it changes its direction.

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.