Sentences with phrase «emitted by oxygen»
Temperatures aloft can be measured in a number of ways, two of which are useful for climate monitoring: by radiosondes (balloon - borne instrument packages, including thermometers, released daily or twice daily at a network of observing stations throughout the world), and by satellite measurements of microwave radiation emitted by oxygen gas in the lower to mid-troposphere, taken with an instrument known as the Microwave Sounding Unit (MSU).5 The balloon measurements are taken at the same Greenwich mean times each day, whereas the times of day of the satellite measurements for a given location drift slowly with changes in the satellite orbits.
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The researchers used satellites to measure heat in the form of microwave radiation emitted by oxygen molecules in the atmosphere from 1979 to 2005.
Light emitted by oxygen is shown as blue, hydrogen emission is shown as green, and nitrogen emission as red light.
Not exact matches
According to this model, the size of the bandgap and the wavelength of the emitted light depend on how many impurities the silicon contains, and the luminescence is tuned by alloying, with elements such as oxygen or carbon, for example.
Oxygen absorbs the electrons emitted by steel corrosion and propels the steel to corrode faster.»
When the star's ultraviolet radiation strikes the gases in the nebula, they heat up, giving out radiation ranging in wavelength from blue — emitted by hot oxygen in the bubble near the star — to yellow — emitted by hot hydrogen and nitrogen.
Presumably, the strong stellar wind emitted by giant stars eventually blows the titanium oxide out of the star's outer regions (along with hydrogen and helium gases and dust made of elements and molecules like carbon) into interstellar space, until vigorous convection brings out more titanium and oxygen that are created from nuclear processes deeper in the star.
«We saw number of spectral features emitted by ionized atoms in the galaxies such as hydrogen, oxygen, and neon, which allowed us to determine the metal content of the galaxies.»
The Sun is important because it provides the Earth heat, it creates our daylight by emiting electromagnetic radiation, it allows plants to grow via photosynthesis which in turn absorb carbon dioxide and create oxygen.
Actually the judge asked a slightly incorrect question (probably unwise to correct him publicly), the question should be,» What is the molecular difference by which CO2 absorbs infrared radiation emitted from the Earth's surface but oxygen and nitrogen do not?»
Although the Oxygen, Nitrogen and Argon components are warmed by conduction and convection they do not absorb the long wave radiation emitted by the surface and by the atmosphere as a whole.
Almost immediately (nanoseconds) they relax from their excited state by either 1) emitting that energy as a new photon, some of which will continue up towards space, some of which will go back downward to be reabsorbed, thus keeping the energy in the atmosphere longer, or 2) by colliding with another gas molecule, most likely an O2 (oxygen) or N2 (nitrogen) molecule since they make up over 98 % of the atmosphere, thereby converting the extra vibrational energy into kinetic energy by transferring it to the other gas molecule, which will then collide with other molecules, and so on, making the air warmer.
Atmospheric oxygen emits microwave radiation, the intensity of which is measured by the MSU and is proportional to temperature.
That plants emit oxygen has long been known — since 1774, in fact, when Joseph Priestley, a British chemist, found a mouse not too «inconvenienced» by being trapped inside a bell - jar with a mint plant.
Ozone - depleting substances are emitted by human activity at the planet's surface and eventually travel to the stratosphere, where there the chlorine atoms and certain other constituent parts break apart the three oxygen atoms that make up an ozone molecule.
1) As I mentioned on May 29, 2011 at 1:37 pm: «If it is correct that all objects that have a temperature above Zero Kelvin (0K) must emit energy by radiation, then why do Nitrogen, Oxygen and Argon not radiate anything at all towards the Earth's surface?»
Ira — regarding your summary comment 4) at May 8, 2011 at 7:51 pm my comment — NO, the atmosphere does NOT emit LWIR across a distribution of wavelengths like a blackbody, see my earlier comment at Dave in Delaware says: May 8, 2011 at 7:00 am Ira Glickstein, PhD says: «4) As I understand it, the ~ 15μm radiation from the Surface to the Atmosphere is absorbed by H2O and CO2 molecules which, when excited, bump into nitrogen and oxygen and other air molecules, and heat the air.
The CO2 absorption / emission is going on everywhere to move heat into the nitrogen / oxygen everywhere too, creating masses of air that rise and are displaced by cooler air, pushing the warmer air still higher up, where eventually heat is emitted into outer space.»
The gas is emitted by bacteria that thrive in oxygen - free places like rice paddies and the stomachs of cows.
Nitrogen has 1950 of these 2500 and oxygen has 525 of them so water molecule emitted photons would travel even further before capture by another H2O molecule.