THE PRACTICE STUDIO
Go slowly. Ask why. Make it yours.
PRACTICE / Thermal radiation
A smaller but hotter emitter
Blackbody B has half the radius of spherical blackbody A. Its wavelength-spectrum peak is at half the peak wavelength of A.
Find the ratio of B’s total emitted power to A’s.
Organize the givens & assumptions
- Radius B / radius A = 1/2
- Peak wavelength B / peak wavelength A = 1/2
- Compare total emitted powers
Both spheres are ideal blackbodies. Compare emitted power, not net exchange with surroundings. Use wavelength-based spectral peaks.
- A
- B
- C
- D
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