What is a gray body?
A. a body of which the monochromatic emissivity (ε) is different wavelengths
B. a body of which the monochromatic emissivity (ε) is constant for the entire wavelength spectrum
C. a body of which the monochromatic emissivity (ε) is maximum for longest wavelength
D. none of the above
Answer:B
What is a gray body?
A. a body of which the monochromatic emissivity (ε) is different wavelengths B. a body of which the monochromatic emissivity (ε) is constant for the entire wavelength spectrum C. a body of which the monochromatic emissivity (ε) is maximum for longest wavelength D. none of the above