Lesson: Blackbody Radiation High School PhysicsPhysics
In this lesson, we will learn how to describe the change with temperature of an ideal blackbody’s color and explain how this shows the quantization of light.
The total energy emitted by a black body is 1.25 µJ. If the total radiated energy is divided into quanta with a wavelength of 700 nm, how many such quanta would be emitted? Use J⋅s for the value of Planck’s constant. Answer in scientific notation to two decimal places.
Pick the word that would correctly complete the following statement about the absorption of electromagnetic radiation by an ideal black body:
The part of the absorption spectrum of an ideal black body containing the greater range of wavelengths contains wavelengths than the wavelength that is most strongly absorbed by the black body.
Which word would correctly complete the following statement about the resonant modes of electromagnetic waves in a cavity?
An electromagnetic wave that is a resonant mode for a cavity must have displacement at the cavity boundaries.