1. Wien’s Law
The Color and Temperature of Stars

2. A Blackbody
A Blackbody is an object that absorbs all E-M radiation that hits it.
Because no light is reflected it appears black.
Such objects also emit E-M radiation well when hot.
Stars, Planets, and most other “solid” objects act like blackbodies emitting a continuous range of E-M radiation
But how bright the light is varies with frequency

4. Stars, Planets and other solid objects shine most brightly with a color that matches their temperature Hotter stars have their “white light” tinted blue Cooler stars have a yellow tint to their “white light” And the coolest have a red tint

5. Wien’s Law
Wien’s law tells surface temperature of a star based on what wavelength color is brightest. It is…. (copy formula)

7. Stars tinted these colors have these surface temperatures:
Blue is about 12,000 °K
Yellow is about °K
Red is about °K