Search for question
Question

=

7 2 points

Return

Next

Which is the correct definition that

describes the term "emissivity, &,"

Emissivity is a form of waste energy

given off by heat radiation.

Is the ratio of the area of the large

object to that of the small object

between which the radiant heat

transfer is occurring

Emissivity is the ratio between the

energy radiated from real surface to

that of the perfect emitter, i.e. a

blackbody, at the same temperature

and wavelength. It ranges between a

value of 0 and 1.

Emissivity is related to how an object

orbits another object.

Fig: 1