Willis Luther Moore, The new air world (1922)
“ LIGHT, HEAT, AND TEMPERATURE MORE WONDERFUL THAN ANY FICTION ARE THE FACT OF INVISIBLE LIGHT, AND THE DIFFERENCE BETWEEN HEAT AND TEMPERATUREThe heat that escapes from the earth’s interior is minute in comparison to that received from the sun, which is the main source of the earth’s supply. Heat is manifested by the motions of the molecules of matter, whether solid, liquid, or gaseous. It is transmitted through space in some mysterious manner, for space is practically void of an atmosphere. One cannot conceive of motion taking place in a void, for there is nothing to move. ”
