Question

The universe is filled with thermal radiation, which has a black body spectrum at an effective temperature of $2.7 \mathrm{K}$ (see Chapter 15). What is the peak wavelength of this radiation? What is the energy (in eV) of quanta at the peak wavelength? In what region of the electromagnetic spectrum is this peak wavelength?

Name: The universe is filled with thermal radiation, which has a black body spectrum at an effective temperature of 2.7 K (see Chapter 15). What is the peak wavelength of this radiation? What is the energy (in eV) of quanta at the peak wavelength? In what region of the electromagnetic spectrum is this peak wavelength?
Uploaded: 2022-05-04T08:10:37-08:00
Duration: 3 min 42 s
Channel: Maitreya E
Description: The universe is filled with thermal radiation, which has a black body spectrum at an effective temperature of 2.7 K (see Chapter 15). What is the peak wavelength of this radiation? What is the energy (in eV) of quanta at the peak wavelength? In what region of the electromagnetic spectrum is this peak wavelength?

          The universe is filled with thermal radiation, which has a black body spectrum at an effective temperature of $2.7 \mathrm{K}$ (see Chapter 15). What is the peak wavelength of this radiation? What is the energy (in eV) of quanta at the peak wavelength? In what region of the electromagnetic spectrum is this peak wavelength?

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University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Maitreya E

05/04/2022

Step 1

Wien's displacement law is given by: \[ \lambda_{\text{max}} = \frac{b}{T} \] where $ b $ is Wien's displacement constant ($ b \approx 2.897 \times 10^{-3} \, \text{m} \cdot \text{K} $) and $ T $ is the temperature in Kelvin. Given \( T = 2.7 \, \text{K} Show more…

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The universe is filled with thermal radiation, which has a black body spectrum at an effective temperature of $2.7 \mathrm{K}$ (see Chapter 15). What is the peak wavelength of this radiation? What is the energy (in eV) of quanta at the peak wavelength? In what region of the electromagnetic spectrum is this peak wavelength?