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Ch 3 Radiation Pt 2

Vocabulary

TermDefinition
Temperature amount of heat in an object, and an indication of how fast its particles are moving
Blackbody hypothetical object that absorbs all electromagnetic radiation
Blackbody Curve spread of intensity of radiation emitted by an object over all possible frequencies
Blackbody Radiation thermal electromagnetic radiation within or surrounding an object
Thermal Radiation light in the form of heat
Kelvin scale where absolute zero temperature is at 0, unlike Fahrenheit or Celsius
Absolute Zero state where all thermal motion stops
Wien's Law states that an object's peak wavelength is inversely proportional to its temperature
Stefan's Law shows that an object's emitted energy increases rapidly with an increase in temperature
Power amount of energy transferred or converted per unit of time
Doppler Effect any motion-induced change in the observed wavelength (or frequency) of a wave
Redshift motion-induced changes in the observed wavelength from a source moving away from us
Blueshift motion-induced changes in the observed wavelength from a source moving toward us
Radial Velocity motion either towards or away from an observer
Tangential Velocity sideways motion relative to an observer
Created by: john_bailey720
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