1. Ch 3-2 Notes: Interactions of Light w/ Matter
Reflection: the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go thru.
Law of Reflection: the angle of incidence is equal to the angle of reflection.
Angle of Incidence = Angle of Reflection.

2. Absorption: in optics, the transfer of light energy to particles of matter. Transmission: the passing of light, or other form of energy thru matter.

3. Scattering: an interaction of light w/ matter that causes light to change its energy, direction of motion, or both.

4. An object can be seen if the eye detects light that is emitted by or reflected from the object.
Lights interacts w/matter during reflection, absorption, scattering, and transmission.
Light that travels thru material that does not change always travels in straight lines.