Sentences with phrase «molecules absorbing radiation»

Temperatures in the low stratosphere rise because of molecules absorbing radiation from the star (right).

Not exact matches

To interpret their results, however, it is necessary to have a very precise answer the question «How much radiation does one molecule of CO2 absorb?»

The sunscreen chemicals that absorb the sun's dangerous ultraviolet radiation are typically organic molecules (as opposed to the metal oxides that block the sun's rays in sunblock).

Tinetti says the earlier studies could be a product of the planets» bright sides cooking to the same temperature throughout, which makes atmospheric molecules less likely to absorb radiation from below.

«A microwave oven cooks food because the water molecules inside it absorb the microwave radiation and thereby heat up and heat the surrounding food.

These vibrating molecules — just like the rotating dipolar ones Snyder observed — could absorb and emit radiation.

The formation of a stratosphere layer in a planet's atmosphere is attributed to «sunscreen» - like molecules, which absorb UV and visible radiation coming from the star and then release that energy as heat.

Thus when the Earth is radiating with a greater intensity than the back radiation from the air, then the excess radiation will be absorbed by the air molecules, and the air will warm.

The formation of a stratosphere layer in a planet's atmosphere is attributed to «sunscreen» - like molecules, which absorb ultraviolet (UV) and visible radiation coming from the star and then release that energy as heat.

Photosynthetically available radiation (PAR) refers to the spectral range (wave band) of solar radiation from 400 - 700 nanometers (the visible wavelengths and the spectrum used by plants for photosynthesis) that is absorbed by the chlorophyll molecule.

Whether being lesser than CO2 in number of molecules in the atmosphere, methane is a potent greenhouse gas absorbing more infra - red radiation per molecule than CO2.

The shorter wavelengths of IR radiation can penetrate the atmosphere, but as its wavelength reaches one micrometre, IR radiation tends to be absorbed by water vapour and other molecules in the atmosphere.

The molecules resonate, their vibrations absorbing the energy of the infra - red radiation.

From what I gather, the ocean, being the huge black body it is, emits a heck of a lot of radiation, a small portion of that gets absorbed by the occasional water vapor molecule (which probably also came from the ocean) or CO2 molecule (which also may have come from the ocean).

Melanin molecules absorb ultraviolet radiation from the sun, protecting you from tissue damage as a result of sun exposure.

Concerning question 2: CO2 absorbs infrared radiation because C has a slight negative charge in the molecule and O has a slight positive charge.

It is known that symmetrical diatomic molecules like nitrogen, oxygen and hydrogen, do not absorb infrared radiation, even though their vibrational frequencies are in the infrared region.

A carbon dioxide molecule still absorbs infrared - red radiation and increases the earth's temperature whether it comes from increased ecomomic activity or not.

Thus when the Earth is radiating with a greater intensity than the back radiation from the air, then the excess radiation will be absorbed by the air molecules, and the air will warm.

The CO2 molecule has a unique way to absorb energy at a particular frequency, but that energy gets transferred very quickly to its neighboring molecules, most of which have no way to emit radiation at that frequency.]

Vibrational modes in molecules with three or more atoms (H2O, CO2, O3, N2O, CH4, CFCs, HFCs...) include bending motions that are easier to excite and so will absorb and emit lower energy photons which co-incide with the infrared radiation that the Earth emits.

This is very difficult to explain to a non-scientist, but basically it is an established scientific fact based on long - established experiment and theory that simple molecules like O2 and N2 don't absorb infra - red radiation whereas more complicate molecules such as CO2 and H2O can.

When CO2 absorbs the radiation it «excites» the molecule, causing it to vibrate more energetically.

Diatomic molecules like O2 and N2 are transparent to that radiation and will never fit the definition of a greenhouse gas, no matter that they absorb heat via other means.

The frequency at which photons are emitted or absorbed is small relative to the rate of energy redistribution among molecules and their modes, so the fraction of some molecules that are excited in some way is only slightly more or less than the characteristic fraction for that temperature (depending on whether photons absorption to generate that particular state is greater than photon emission from that state or vice versa, which depends on the brightness temperature of the incident radiation relative to the local temperature).

Only molecules made of at least three atoms absorb heat radiation and thus only such trace gases makes the greenhouse effect, and among these CO2 is the second most important after water vapor.

Each consisting of transparent containers within a controlled, ambient temp environment, and each containing appropriate and variable trace concentrations of GHG's or, for the liquid system, other IR absorbing molecules, and both exposed to appropriate IR radiation.

For example simple spectroscopy dictates that the CO2 molecule vibrates, stretches, and rotates creating quantized absorption lines that are Doppler broadened and pressure broadened and absorb the infrared radiation coming from the warmed planet.

If you are designing an atmospheric model with molecules that absorb or emit ir energy, N2 and O2 would not be modeled as absorbing or emitting ir energy through vibrational interactions with electromagnetic radiation.

He found that gases and vapors whose molecules had three or more atoms, such as water vapor and CO2, absorbed much more of the thermal radiation passing through the tube than did two - atom molecules such as oxygen and nitrogen.

When an atmospheric molecule absorbs energy by conduction or radiation it vibrates faster thereby becoming warmer.

CO2 molecules are incapable of absorbing any radiation above the 15 micron band from the earth's surface.

Each and every CO2 molecule in the atmosphere is a unique black body that absorbs or emits radiation at 2.7, 4.3 and 15 microns.

In the atmosphere, the high energy molecules emit radiation in all directions, and the low energy molecules absorb from all directions.

A molecule that absorbs radiation and then emits radiation will do so with either a change in the amplitude or the frequency of the radiation.

Doesn't Kirchhoff's radiation law require that in a mixture of gasses in thermal equilibrium with the walls of an enclosing container, that each molecule must reradiate a quantum for each quantum absorbed?

LadyGray — A calculation which I have looked for, and been unable to find, is a calculation of the efficiency of gas molecules absorbing and then emitting radiation.

A calculation which I have looked for, and been unable to find, is a calculation of the efficiency of gas molecules absorbing and then emitting radiation.

Traditional anthropogenic theory of currently observed global warming states that release of carbon dioxide into atmosphere (partially as a result of utilization of fossil fuels) leads to an increase in atmospheric temperature because the molecules of CO2 (and other greenhouse gases) absorb the infrared radiation from the Earth's surface.

I agree with your contention that symmetrical non polar molecules do not interract with the IR radiation; but in collisions, even symmetrical polyatomic molecules become polar, and therefore can absorb and radiate.

If there is total LTE, molecules and radiation included, then there will be the same amount of power radiated as absorbed with none going to the other molecules.

If CO2 and H2O molecules now are cooled below the previous equilibrium point by having their radiation allowed to escape to outer space, then I believe these molecules must then tend to absorb more energy than yield energy with each interaction with the other components of the atmosphere until that atmosphere as a whole reaches a new thermal equilibrium where the net radiation going out and the net radiation coming in (primarily from the sun and the surrounding atmosphere) is the same.

However, mixtures of gases (even poor absorbers) are better, not only because of different absorption spectra, but also because of the inter-species collisions (which to the radiation look like asymmetrical molecules).

It is, effectively, at the blackbody radiation temperature (and all molecules including N2 and O2 absorb and emit blackbody radiation — this seems to not be understood by many).

Molecules like N2 and O2 (99 % of Earth's atmosphere) can't absorb longwave radiation because identical diatomic molecules don't bend (they are syMolecules like N2 and O2 (99 % of Earth's atmosphere) can't absorb longwave radiation because identical diatomic molecules don't bend (they are symolecules don't bend (they are symmetric).

That molecule absorbs and the emits certainty «frequencies» of «electromagnetic radiation.»

Yes, some energy is absorbed and transfered into kinetic energy of surrounding air molecules via conduction but the maority is in fact reemitted as radiation in the same bandwidths that the absorbtion occurs.

Of the radiation GHGs absorb they give up the energy acquired via conduction to their neighboring molecules in collisions.

To review the process please see here and note the in picture caption «Some of the infra - red radiation is absorbed and re-emitted by the greenhouse gas molecules».

How does a CO2 molecule, somewhere up in the middle troposphere, KNOW that it is only allowed to absorb upwelling radiation photons from the surface and must ignore all the other photons coming at it from all around in the atmosphere?