Black Body Radiation (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Practise the cards
12 cards from this deck
What radiation do all objects emit and absorb?
What radiation do all objects emit and absorb?
Infrared radiation
Rate of radiation emission for hotter objects
Rate of radiation emission for hotter objects
More radiation per second
Wavelength of radiation from hotter objects
Wavelength of radiation from hotter objects
Shorter wavelengths
What a black body absorbs
What a black body absorbs
All the radiation it receives
Does a black body transmit or reflect radiation?
Does a black body transmit or reflect radiation?
No
Wavelengths emitted by a black body
Wavelengths emitted by a black body
All wavelengths
Why black body is a perfect emitter
Why black body is a perfect emitter
Emits radiation across all wavelengths
Absorption vs emission at constant temperature
Absorption vs emission at constant temperature
Rate of absorption equals rate of emission
Condition when temperature increases
Condition when temperature increases
Absorbing more energy than emitting
Condition when body is cooling down
Condition when body is cooling down
Emitting more energy than absorbing
Colour of hotter stars
Colour of hotter stars
Blue
Colour of cooler stars
Colour of cooler stars
Red