ASTR 105 Lecture Notes - Lecture 14: Doppler Effect, Blueshift

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25 May 2018

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Lab AST 105 Lecture Notes 14:

• If you pass white light through a prism it separates into it's...

• component colors

• Red in nm

• 700 nm

• Blue in nm

• 400 nm

• What is a black-body curve?

• A graph of an object's energy output vs. wavelength

• What does a peak on a wavelength tell us about an object?

• The temperature and the color of the object

• Hot objects emit light that peaks at...

• shorter wavelengths

• Cool objects emit light that peaks at...

• longer wavelengths

• Everything with a temperature emits _______________ depending on how hot it is

• radiation

• Hotter objects emit radiation with shorter wavelengths or _______ light

• bluer

• Cooler objects emit radiation with longer wavelengths or ___________ light

• redder

• Humans and animals have a body temperature, so they emit ______________

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