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Search Results for “Infrared radiation (biology)”
 
 
1) infrared radiation. The Columbia Encyclopedia, Sixth Edition. 2001
...Infrared rays thus occupy that part of the electromagnetic spectrum with a frequency less than that of visible light and greater than that of most radio waves, although...

2) infrared astronomy. The Columbia Encyclopedia, Sixth Edition. 2001
...All objects, from trees and buildings on the earth to distant galaxies, emit infrared (IR) radiation. The study of such radiation from celestial objects is of particular...

3) bolometer. The Columbia Encyclopedia, Sixth Edition. 2001
...The bolometer was invented in 1880 by Samuel P. Langley. Basically it consists of a radiation-sensitive resistance element in one branch of a Wheatstone bridge; changes...

4) radiometer. The Columbia Encyclopedia, Sixth Edition. 2001
...One of the earliest experiments in radiometry was performed c.1800 by W. Herschel, who observed the heating of a mercury thermometer by sunlight; he was also able...

5) light. The Columbia Encyclopedia, Sixth Edition. 2001
...The wavelengths of visible light range from about 350 or 400 nm to about 750 or 800 nm. The term "light" is often extended to adjacent wavelength ranges that the...

6) radiation. The Columbia Encyclopedia, Sixth Edition. 2001
...Commonly radiation refers to the electromagnetic spectrum, which, in order of decreasing wavelength, includes radio, microwave, infrared, visible-light, ultraviolet,...

7) fluorescence. The Columbia Encyclopedia, Sixth Edition. 2001
...The light is given off only while the stimulation continues; in this the phenomenon differs from phosphorescence, in which light continues to be emitted after the...

8) local group. The Columbia Encyclopedia, Sixth Edition. 2001
...Milky Way galaxy, the Andromeda Galaxy, and the Magellanic Clouds. The local group is spread over an ellipsoidal region of space with a major axis of approximately...

9) global warming. The Columbia Encyclopedia, Sixth Edition. 2001
...The temperature of the atmosphere near the earth's surface is warmed through a natural process called the greenhouse effect. Visible, shortwave light comes from the...

10) electromagnetic radiation. The Columbia Encyclopedia, Sixth Edition. 2001
...These interacting electric and magnetic fields are at right angles to one another and also to the direction of propagation of the energy. Thus, an electromagnetic...

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