The absorption of heat is the taking of it up by the body to which it is transmitted or conducted. Heat was conveyed to my hand by radiation, and taken up by my hand by absorption.
117. What is the Convection of heat?
The convection of heat is the transmission of it through a body or a number of bodies, or particles of bodies, by those substances which first received it; as when hot water rises from the bottom of a kettle and imparts heat to the cold water lying above it.
CHAPTER VII.
118. Why does not a piece of wood which is turning at one end, feel hot at the other end?
Because wood is a bad conductor of heat.
119. Why is wood a bad conductor of heat?
Because the arrangement of the particles of which it is composed does not favour the transmission of caloric.
120. Why do some articles of clothing feel cold, and others warm?