...the same laws as to reflection, absorption, refraction, &c., as rays of light (see OPTICS). When they fall on the surface of a body, they either enter it or are refected. Those, again, that enter are either transmitted, like light through glass, or are retained...

...the same laws as to reflection, absorption, refraction, &c., as rays of light (see OPTICS). When they fall on the surface of a body, they either enter it...transmitted, produce no effect on the temperature. 240. If a red-hot iron ball, B, be placed in the focus of a concave metallic mirror M, its radiant...

...the same laws as to reflection, absorption, refraction, &c., as rays of light (see OPTICS). When they fall on the surface of a body, they either enter it...are reflected. Those, again, that enter are either trarumitted, like light through glass, or are retained and absorbed. It is only the rays that are absorbed...

...Those, again, that enter are either troasmitii'd, like light through glass, or are rewined and obforbtd. It is only the rays that are absorbed that warm the...temperature. Surfaces that radiate heat best, are found also tr> imbibe it most readily. If a table, then, is formed of substances according to their power of radiating...

...light differs from blue — that is, by having longer waves (see SOUND AND LIGHT). When heat-rays fafl on the surface of a body, they either enter it or...the temperature. Surfaces that radiate heat best, arc found also to imbibe it most readily. If a table, then, is formed of substances according to their...