Author Question: Emissivity A) can have values greater than one. B) will always be less than one for any object ... (Read 67 times)

audragclark · **on:** Jul 14, 2018

Emissivity

A) can have values greater than one.
B) will always be less than one for any object that is not a black body.
C) is typically .1 or below for most natural surfaces encountered on Earth.
D) is constant for the atmosphere.

Question 2

The Stefan-Boltzmann law

A) gives energy intensities in watts per square meter.
B) demonstrates that a cooler body will radiate with greater intensity than will a hotter body.
C) does not apply to black bodies.
D) is derived from Wien's law.