Sentences with phrase «photons get»

The ~ 10μ photons get an almost free pass and zip through the GHGs and off to Space or, if they happen to be emitted downward, strike the Earth and get absorbed, further warming the Earth until it stabilizes in temperature, re-emitting the same number of photons as it receives.

Why don't photons get absorbed by all the other water vapor molecules to cause warming?

Whether there is 0.03 % or 0.04 % of CO2 in the atmosphere only influences how often the photons get absorbed and re-radiated on their way to space — an increase in CO2 delays the process a little but does not change it fundamentally and * Does * * Not * * Trap * * Heat * any more than a sieve traps water.

It gets stimulated emission only if another photon gets involved in the emission.

But having arrived at that point and having been absorbed, the photon gets re-emitted in a random direction.

Sure seems that the sun / earth rotation adds more photons to get warmer every morning, and then when the rotation reduces the number of photons it gets colder every night in spite of the number of CO2s increasing?

It seemed an appropriate response to the apparent view that each photon gets absorbed only once — and that was what heated up the atmopshere.

Not exact matches

Because neutrinos scarcely interact with matter, they should escape an exploding star almost immediately, while photons of light will take about 3 hours to get out.

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.

With the green light from Townes, Clauser began to scavenge spare parts from storage closets around the Berkeley lab — «I've gotten pretty good at dumpster diving,» as he put it recently — and soon he had duct - taped together a contraption capable of measuring the correlated polarizations of pairs of photons.

ALICE, for example, will get a new set of instruments designed to track electrons and photons flying from collisions.

«What quality basically means is: How many photons can you get before you've destroyed the quantum state of the spin?»

For example, a project to rebuild the Advanced Photon Source, an x-ray synchrotron at Argonne National Laboratory in Lemont, Illinois, would get $ 93 million.

Photons are all you get.)

It uses pure light, reflecting off the sail, so you want a large area to collect a lot of photons and you want it highly reflective so you get a high efficiency of them bouncing off.

The information would basically remain encoded in an infinite number of low - energy photons racing to get out of the black hole, but stuck at its event horizon by the black hole's intense gravity, according to a study in Physical Review Letters.

Grégoire Ribordy, CEO of the Swiss company ID Quantique, which makes commercial quantum cryptography, says that practical systems had already largely got around the blinding loophole by continuously adjusting the detectors, so that they are always reacting differently to incoming photons.

And the ideal material for the job — silicon itself — has been a poor light emitter: Only about 0.01 % to 0.1 % of the photons ever get out.

Photons that make it through the first polarizer are polarized by it, and then their probability of getting through the second one depends on the angle between their polarization and the second polarizer's axis.

Thus, the probe beam photons, rather than being absorbed, could get through, marking the «on» state.

«What we found was that when larger amounts of quantum information are encoded on a single photon, the copies will get worse and hacking even simpler to detect,» said Frédéric Bouchard, a University of Ottawa doctoral student and lead author of an open access publication that appeared this month in the journal Science Advances.

A photon will get through every time when it hits a polarizer with the transmission axis parallel to the photon's polarization.

Raymond Simmonds of the National Institute of Standards and Technology in Boulder, Colo., who led one of the teams, got a seven - millimeter - long wire to store a photon for more than one microsecond.

Our idea is that to get stronger interactions between single photons and single atoms, we want to reverse whatever the atom does.

If the photons won't talk, how can the message get across?

X-ray phase contrast imaging measures not just the number of X-ray photons that get through the sample, as in conventional X-ray imaging, but also the phase of the X-rays after they pass through, offering a complete look at interfaces inside a structure.

In an optical telescope, photons strike a mirror or lens whose surface is nearly perpendicular to the light's path; but extreme ultraviolet photons hitting such a surface would get absorbed rather than reflected.

«But it turns out that if you shine the light in different directions, you get different results, because the interaction between the light and the electrons in the material — the electron - photon interaction — is also anisotropic, but in a non-commensurate way.»

In a long, laborious process, the research group further developed and tested the photonic chip until it achieved extreme efficiency and Peter Lodahl explains that it was particularly surprising that they could get the photon emission to occur in a way that was not previously thought possible.

Normally, the photons are transmitted in both directions in the photonic waveguide, but in their custom - made photonic chip they could break this symmetry and get the quantum dot to differentiate between emitting a photon right or left, that means emit directional photons.

They light up when electrons in a semiconducting material, having started out in a position of higher energy, get trapped (or «localize») in a position of lower energy and emit the difference as a photon of light.

You mention the «Quantum Russian roulette» test for the many - worlds interpretation of quantum theory, in which the spin of a photon determines whether an experimenter gets a bullet or a blank fired at them (3 September, p 36).

However, the rules of quantum physics guarantee that the eavesdropper could only get the phase right for 75 per cent of the new photons.

Now Stefanie Barz's team at the University of Vienna, Austria, has got Lloyd's algorithm working on a very simple quantum computer, using two entangled photons to solve a system of two equations (arxiv.org/abs/1302.1210).

Now, proponents of technology that seeks to propel spacecraft using the pressure exerted by photons from the sun on thin «solar sails» look set for another chance to get their idea off the ground.

The group's discovery, tested on a Stanford rooftop, addresses a problem that has long bedeviled the solar industry: The hotter solar cells get, the less efficient they become at converting the photons in light into useful electricity.

When two nuclei got close enough that their electromagnetic fields overlapped, two photons could interact with one another and be scattered away.

When these diagonally polarized photons arrive at the vertical polarizer, now half of them will get through — they have no «memory» of ever having been horizontally polarized.

Only a photon that comes in with energy higher than the amount needed to power up an electron will get absorbed.

When sunlight shines on a solar panel, photons — tiny packets of light energy — bombard the panel's surface like a barrage of bullets and get absorbed.

But a photon can give an electron enough energy to escape that pull, much like a video game character getting a power - up to jump a motorbike across a ravine.

Photons with too little energy «will just sail right on through» the light - catching layer and never get absorbed, says Daniel Friedman, a photovoltaic researcher at the National Renewable Energy Lab.

How does adding that polarizer (which will block some photons) cause photons to get through?

Creatures like jellyfish have so little internal structure that they are naturally transparent, but when it comes to something as complex as a mouse embryo, it takes extra work to get the photons through.

One potential way of getting around that problem is by supposing that elementary particles such as electrons, photons and quarks are really just manifestations of tiny strings of energy jiggling in higher dimensions.

Even as other kinks in the data got ironed out, the excess of photons remained.

«Quantum manipulation power for quantum information processing gets a boost: Improving the efficiency of quantum heat engines involves reducing the number of photons in a cavity, ultimately impacting quantum manipulation power.»

An exposure to UVB - Damage will cause a autofluorescence compound to be made called melanin, this is from dissipating photon energy quickly with sunscreen users getting health consequences.

You know, if you shine a laser beam across a sunlit room, it gets to where it's going because the photons from the laser and sun do not interact with one another.

We measure incident photon - to - current efficiency (IPCE) to get a wavelength - dependent conversion efficiency that can be integrated over a reference spectrum (AM1.5 G) to corroborate the photocurrents obtained under broadband illumination.