PRESENTATION OUTLINE
13.5
Illusions and Mirages are caused by atmospheric refraction.
Refraction ( definition) is a bending of a wave when it enters a medium.
Why does light travel faster through less dense air then dense air ?
As days keep passing , the air begins to get less dense.
Where is the air less dense, and why?
What are on planes that we absolutely need when we are at higher altitudes ?
To scientist , color is not in a material.Color is a physiological experience plus it is in the eye of the beholder.
The colors we see depend on the frequency of the light we see.( explain).
What is the lowest frequency color we detect ?
What is the highest frequency color we detect?
(Answer& explain)
7 colors all blended together appear white.
(Explain)
So when we see a rose we say that light from a rose is red, in a strict sense we mean it appears red.
Selective Reflection- ( give example)
Selective Transmission-(give example)