Quote: the electromagnetic field travels through an ethereal substance

Quotation

(4) The electromagnetic field is that part of space which contains and surrounds bodies in electric or magnetic conditions. ... [Despite a vacuum] There is always, however, enough of matter left to receive and transmit the undulations of light and heat, and it is because the transmission of these radiations are not greatly altered when transparent bodies of measurable density are substituted for the so-called vacuum, that we are obliged to admit that the undulations are those of an ethereal substance   Google-1   Google-2

Published before 1923

Related Topics

Topic: light (37 items)