Even in ancient times, Shachtman says, in Egypt and India, night cooling by evaporation of water and heat radiation, and the ability of salts to lower the freezing temperature of water was practiced.
32.
In 1934, he filed a patent application on The Art of Locating Objects by Heat Radiation . Initially held up because of its classified nature, this was eventually granted in 1946.
33.
The difference between the highs of the days and the lows of the nights can be considerable as warmth dissipates to space during clear nights, the heat radiation not being trapped by clouds.
34.
The cause is similar to what a fire fighter does if he approaches a hot fire : he protects himself by means of a water vapour screen against the enormous infrared heat radiation.
35.
"When a larger fraction of the heat radiation from the Earth's surface is absorbed in the lower parts of the atmosphere, smaller amounts reach the stratosphere, " he said in an e-mail message.
36.
It is claimed that a full Lake Eyre would moderate the air temperature in the region by the absorption of sunlight by the water instead of heat radiation from dry land into the air.
37.
According to researcher Edward Martin, this may be attained by building the pond in a hollow, where cool air is likely to gather, or by keeping the surrounding grass long to enhance heat radiation.
38.
Prior to Kirchhoff's studies, it was known that for total heat radiation, the ratio of emissive power to absorptive ratio was the same for all bodies emitting and absorbing thermal radiation in thermodynamic equilibrium.
39.
Would the " Mercury shine " be a significant infrared heating source, leading to the designers not painting the non-sun side black for better heat radiation, with lots of surface area to radiate off heat?
40.
It would consist of four telescopes designed to observe a star's infrared light ( or heat radiation, the same radiation picked up by thermographs that energy consultants use to measure heat loss from a house ).
