Sentences with phrase «by absorbing a photon»

Crystal quantum memory devices hoard data by absorbing photons, each of which carry one quantum bit, or qubit, of data.

The weak but nevertheless detectable SIF signal emerges naturally on sunlight - exposed leaves, when chlorophyll molecules are excited by absorbed photons, and is a proxy for plant photosynthesis.

By absorbing a photon of light, photosensitive molecules can reposition chemical bonds and thus create a «kink» in the polymer chain.

Not exact matches

The laser generates a specific wavelength of light that is absorbed in a stoichiometric fashion by glucose molecules — the more glucose molecules; the more photons are absorbed.

Photons that enter the crystal at one end bounce back and forth between these «mirrors» a few thousand times before they can escape, which increases their likelihood of getting absorbed by an atom along the way.

By first converting the sunlight to heat and then back into light, the device fine - tunes the energy of photons absorbed by the photovoltaic cell, maximizing the electricity - generating potentiaBy first converting the sunlight to heat and then back into light, the device fine - tunes the energy of photons absorbed by the photovoltaic cell, maximizing the electricity - generating potentiaby the photovoltaic cell, maximizing the electricity - generating potential.

By careful construction of the avalanche region, it is possible to build an APD which generates an output, or gain, of 1500 electrons for every photon which is absorbed.

Instead, each particle of light, or photon, is briefly absorbed by an atom in the material.

Under full sunlight, the energy from excess absorbed photons is intentionally dissipated by the plant as heat.

By conservation of energy, the energy of the photon is absorbed by the electron and, if sufficient, the electron can escape from the material with a finite kinetic energBy conservation of energy, the energy of the photon is absorbed by the electron and, if sufficient, the electron can escape from the material with a finite kinetic energby the electron and, if sufficient, the electron can escape from the material with a finite kinetic energy.

When light hits a painting, some photons are absorbed by pigment molecules, which split apart.

Exciton diffusion is also a basic mechanism underlying photosynthesis: Plants absorb energy from photons, and this energy is transferred by excitons to areas where it can be stored in chemical form for later use in supporting the plant's metabolism.

The universe is opaque to ultraenergetic photons, or gamma rays, which are absorbed by the matter and radiation that lie between their source and Earth.

An atom can absorb a photon, or light particle, by boosting one of its electrons to a higher energy, but it's unstable in this state.

When an already excited atom is hit by another photon, however, it can't absorb it; instead it releases a photon of the same color, or frequency.

OCO - 2 will also closely monitor the carbon uptake of plants by measuring the weak fluorescence that is produced during photosynthesis as plants» chlorophyll pigments absorb light to capture energy and subsequently re-emit photons at longer wavelengths.

Each photon was absorbed efficiently by the rare - earth ions with the help of the cavity.

Ordinary atoms can change their energy levels under the right conditions by either absorbing or emitting a photon.

Two key properties of fluorophores that determine brightness are the extent to which the excitation light is absorbed and the efficiency by which absorbed photons are converted into emitted photons.

Non-thermal photons of light are administered to the body and absorbed by the injured cells.

Non-thermal photons of light are administered to the body for about 3 to 8 minutes and absorbed by the injured cells.

The photons are absorbed by the cells, causing a chemical reaction within the cells, stimulating healing processes.

As the frequency of the electric field of the infrared radiation approaches the frequency of the oscillating bond dipole and the two oscillate at the same frequency and phase, the chemical bond can absorb the infrared photon and increase its vibrational quantum number by +1.

It can be reasonably calculated from available extinction coefficients and CO2 concentration that > 99 % of the IR photons emitted by the earth's surface that can be absorbed by CO2 will be absorbed in the first 100m.

Transitions between these levels is governed by quantum numbers and are allowed or forbidden by selection rules, so the energy of photons emitted or absorbed is subject to these rules.

The higher energy ultraviolet photons, which can be absorbed by O2 molecules in the stratosphere, break that oxygen - oxygen bond and the freed oxygen can combine with O2 to make ozone (O3).

What is relevant is the probability that such a photon will be absorbed by (or more generally interact with) a susceptible molecule (CO2) within the given length.

What I'm saying is that TOA, as far as radiative energy is concerned, for CO2 or other IR absorbing gas, is effectively the altitude where the chance that a photon will be absorbed, and emitted back in a direction that will lead it to being absorbed again by a molecule in the atmosphere, becomes negligible.

How far does an emitted photon travel before it is absorbed again by another molecule?

What happens to a non-GHG molecule when it absorbs a photon by collision from a GHG molecule?

PS when molecular collisions are frequent relative to photon emissions and absorptions (as is generally the case in most of the mass of the atmosphere), the radiant heat absorbed by any population of molecules is transfered to the heat of the whole population within some volume, and molecules that emit photons can then gain energy from other molecules.

Do photons from the surface of the earth heat up the CO2 molecules that absorb them (where heating up would mean making them move faster), and transmit this heat to other air molecules by collision.

Re 392 Chris Dudley — while it makes intuitive sense that a spatially - invariant net photon flux could be sustained by a constant gradient in local equilibrium photon concentration (proportional to T ^ 4 for a grey gas, assuming constant real component of index of refraction), the calculation of what that gradient should actually be is made a bit more complicated by the fact that photons travelling in different directions will on average be absorbed over longer or shorter vertical distances.

So, it seems to me that the amount of energy absorbed by CO2 in the bands that can be absorbed by CO2 (ie, some fraction of the total outgoing energy) is proportional to the fraction of CO2 in the atmosphere, unless you can somehow magically push all that CO2 into a thin shell that no photon of the required frequency can avoid.

By the way, CO2 does not re-emit the photons that it absorbs.

However, a body absorbing a thermal energy photon of «x» energy emitted by another body, whether colder or hotter, will always absorb that «x» energy.

The other part is an extension of that that describes how photons are absorbed and emitted in a large space filled by gas, the atmosphere (also clouds must be taken into account).

RealOldOne2 claims that the emission of a photon from a cold body can not be absorbed by a hotter body as that would violate the 2nd law.

You do know that plant life absorbs photons and CO2, which is buffered by inorganic carbonate, and convert it to organic carbon.

Molecules absorbing photons at a depth of 1 mm will likely loose that energy to the bulk by molecular collision.

Cotton thinks a photon from the cold atmosphere can not be absorbed by a warm surface because it has some kind of memory of its emission temperature.

Radon is radioactive, and if it were present at 400 ppm, collisions of neutrons with neighboring air molecules would cause more warming than an equivalent concentration of CO2 by absorbing relatively weak infrared waves / photons.

Photons of sufficient energy are absorbed by oxygen molecules and as a result the atoms of the oxygen are «blown» apart.

Microwave photons can be produced with very different distributions, like radio waves can, and can be absorbed just as well as other photons by warm surfaces.

No, a 15 micron photon is absorbed just as easily whether it is emitted by a warm surface or emitted from the atmosphere.

The basic flaw is that photons carry no information apart from their own wavelength and they are absorbed just as easily by hot and cold surfaces.

It would still pick up heat from direct conduction, as Gary Moran has insisted; and it would not be correct to say that there would be NO interaction with radiation (another point by Tom Vonk): if there are lower - energy bands, they will be used by the gas to absorb photons.

BTW, in case you didn't get it, the basic error by Tom is demanding that there be LTE at all times, even when a photon of IR from outside the local area is absorbed.

So when a molecule absorbs a photon (which, by definition results in an excited vibrational and / or rotational state) the very process of re-establishing equilibrium means that some of that energy winds up in translation.

I'd like to see it worked out quantitatively, but in any case, if we're talking a reasonable size local area, the uncertainty of temperature by one or a few IR photons being absorbed is too small to worry about.