Black Body Radiation (AQA GCSE Physics): Flashcards
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13 cards from this deck
Type of radiation all objects emit and absorb
Type of radiation all objects emit and absorb
Infrared radiation
Radiation output per second from hotter objects
Radiation output per second from hotter objects
More radiation per second
Wavelength of radiation from hotter objects
Wavelength of radiation from hotter objects
Shorter wavelengths
Black body definition
Black body definition
Object that absorbs all radiation it receives
Does a black body transmit or reflect radiation?
Does a black body transmit or reflect radiation?
No, it does neither
Wavelengths emitted by a black body
Wavelengths emitted by a black body
All wavelengths
Term for black body as an emitter
Term for black body as an emitter
Perfect emitter
Absorption vs emission rate at constant temperature
Absorption vs emission rate at constant temperature
Rate of absorption equals rate of emission
State maintained at constant temperature
State maintained at constant temperature
Thermal equilibrium
Energy condition when temperature increases
Energy condition when temperature increases
Absorbing more energy than emitting
Energy condition when body cools down
Energy condition when body cools down
Emitting more energy than absorbing
Colour of hotter stars
Colour of hotter stars
Blue
Colour of cooler stars
Colour of cooler stars
Red