What are some examples of wave refractions?

-- The lenses of eyeglasses work because of refraction.

-- A pencil standing in a half-glass of water looks broken because of refraction.

-- The lenses and mirrors in telescopes and microscopes work because of refraction.

-- When the sun is setting and it looks squashed ... shorter and wider than a true circle ... that's caused by refraction of the sunlight through Earth's atmosphere.

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular