Chapter 27, Problem 62RPP

To determine

The reason due to which the photographs taken from a normal camera do not show the arm covered with black plastic while an infrared camera shows the arm, from the following options:

a. Light does not pass through black plastic, but infrared radiation does.

b. His arm is very warm under the black plastic bag and emits much more infrared radiation.

c. The bag temperature is similar to his arm temperature.

d. The black bag absorbs light and becomes warm and is a good thermal emitter.

e. None of the above.