Black Body Radiation (AQA GCSE Physics): Flashcards
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14 cards from this deck
Radiation emitted by all objects above absolute zero
Radiation emitted by all objects above absolute zero
Infrared radiation
Effect of higher temp on infrared radiation emitted
Effect of higher temp on infrared radiation emitted
More infrared radiation is emitted
What a perfect black body absorbs
What a perfect black body absorbs
All radiation that hits it
What a perfect black body reflects
What a perfect black body reflects
No radiation at all
Perfect black body as an emitter
Perfect black body as an emitter
Perfect emitter of radiation
Condition for object to maintain steady temperature
Condition for object to maintain steady temperature
Absorbs same amount of radiation as it emits
Condition for object temperature to increase
Condition for object temperature to increase
Absorbs more radiation than it emits
Condition for object temperature to decrease
Condition for object temperature to decrease
Emits more radiation than it absorbs
Definition of intensity
Definition of intensity
Energy given off per square metre every second ()
Effect of higher temp on radiation intensity
Effect of higher temp on radiation intensity
Intensity increases (more radiation given off)
Effect of higher temp on wavelength of max intensity
Effect of higher temp on wavelength of max intensity
Wavelength gets shorter
Wien's displacement law formula
Wien's displacement law formula
Colour of cooler stars
Colour of cooler stars
Red (longer wavelengths)
Colour of hotter stars
Colour of hotter stars
Blue-white (shorter wavelengths)