Astronomy homework help

[Egenz_9533]

Thermal Radiation Laws.Consider two furnaces of the same size that emit thermal radiation. The thermal radiationspectrum of furnace A peaks at a wavelength of 1,000 nm, while that of furnace B peaks at2,000 nm.
(a) In what portions of the electromagnetic spectrum do these furnaces emit most of their

radiation? What are their peak wavelengths in angstroms (˚

A)?

(b) According to Wien’s law: (i) Which one is hotter? (ii) What is the ratio of their temper-atures?
© According to Stefan-Boltzmann’s law: (i) Which one emits more radiation (energy)? (ii)What is the ratio of the fluxes radiated by these furnaces?

[swansont]

 

Thermal Radiation Laws.Consider two furnaces of the same size that emit thermal radiation. The thermal radiationspectrum of furnace A peaks at a wavelength of 1,000 nm, while that of furnace B peaks at2,000 nm.

(a) In what portions of the electromagnetic spectrum do these furnaces emit most of their

radiation? What are their peak wavelengths in angstroms (˚

A)?

(b) According to Wien’s law: (i) Which one is hotter? (ii) What is the ratio of their temper-atures?

© According to Stefan-Boltzmann’s law: (i) Which one emits more radiation (energy)? (ii)What is the ratio of the fluxes radiated by these furnaces?

 

 

What have you done so far?

 

Part a is asking you what part of the spectrum contains a wavelength of 1 micron and 2 micron

 

Parts b and c even tell you what equations you should be using.