light
light comes from things like the sun light bulbs and candles.it bounces off of things and allows us to see
light source
the place from which light originates
light path
the trajectory that light takes as it travels
ray
ray is a beam of light
medium
a substance that moves energy light or sound waves from one place to another
refraction
the bending of light or other waves when they pass from one transparent substance to another
reflection/reflect
the return of light or sound waves from a surface the production of an image in a mirror
absorption/absorb
the process of taking something such as light energy