Sentences with phrase «absorb all wavelengths of»

Unlike pigments, which create color by absorbing some wavelengths of light and reflecting the rest, the nanostructures are shaped so that they physically bend and scatter light in different directions, sending particular colors back to our eyes.

«It can absorb all wavelengths of UVB radiation, with no gaps in coverage,» says Zwier, who says his finding could be useful for developing more resistant plants.

CO2 absorbs some wavelengths of the infrared light now being radiated from Earth's surface.

When ozone absorbs these wavelengths of UV light, the compound is destroyed.

CO2 absorbs some wavelengths of infrared that water does not, so it independently adds heat to the atmosphere.

Thus a material (like the atmosphere) that absorbs some wavelength of light (say 10 um) poorly will also emit that wavelength poorly.

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.

The lack of infrared glow from the galaxy across a broad range of wavelengths, however, suggests that there's very little dust there to absorb and then re-radiate the stars» radiation, the team notes.

According to the researchers there are several chemical compounds that are typically used in a sunscreen that efficiently absorbed varying wavelengths of UVB radiation.

This is because their wavelength of 1064 nanometres means they are absorbed by the leaves and other organic matter such as oil, but not by metal, so energy from the lasers is reflected off the rails.

The young chemist did not know why the resulting color was so vivid; the ability of molecules to absorb photons at specific wavelengths based on the structure of their shared electron bonds would not be worked out for another fifty years.

Most organisms» colors are produced by pigments that absorb certain wavelengths of light, but not others, to create a color.

But the combination of modern computers and novel treatments of the problem mean that we can now use quantum theory to calculate how strongly CO2 absorbs light at each wavelength.»

Because the metal coatings absorb a lot of light, reflecting only a narrow set of wavelengths, Capasso suggests that they could also be incorporated into optoelectronic devices like photodetectors and solar cells.

The key discovery consists in the observation that the composite thin film — barely 110 nanometres thick — absorbs a broader portion of the solar spectrum compared to the wavelengths absorbed in the thin films made of the two individual materials.

He estimates that a 2 millimeter thick layer of these tar constituents, polymers called tholins, would absorb more than 99 % of the UV energy at the most - damaging wavelengths.

This involves determining the composition of a planetary atmosphere by measuring its spectra, the distinctive radiation that gases absorb at their own particular wavelengths.

Astronomers have been telescopically studying Ceres for decades, using spectrometers to measure how certain wavelengths of light are reflected or absorbed by substances on the surface.

The reason: In addition to absorbing UV light, the carbon - enriched TiO2 catalyst also absorbed longer wavelength photons in the violet, blue, and green regions of the spectrum.

Electrons within atoms absorb light of a specific wavelength by jumping from one energy level to a higher one.

As the quasar's light zips through the Fermi bubble, carbon and silicon atoms in the gas absorb certain wavelengths of ultraviolet light.

«The total thickness of 7.8 millimeters is around one twenty - ninth wavelength of the central frequency of incident microwaves, and the ultra-thin absorber with broad bandwidth may be widely used in warship stealth, airplane cloaking and tunable, broadband antennae.»

«Usually the thickness of conventional radar absorbers is a quarter the wavelength of the incident microwave.

You then tune a laser to the exact wavelength that only heavy CO2 absorbs and shoot a burst of it into the cavity.

To get a different view, astronomer Giovanna Tinetti and her colleagues at the European Space Agency and University College London focused instead on the light grazing the atmosphere of HD 189733 b. Tinetti had predicted that water would absorb more light at the longer wavelength of 5.8 microns (thousandths of a millimeter) than at 3.6 microns, in contrast with other molecules such as methane and ammonia.

This material, in which carbon substitutes for some of the lattice oxygen atoms, absorbs light at wavelengths below 535 nanometers and has a lower band - gap energy than rutile (2.32 versus 3.00 electron volts).

Our colour vision depends on proteins that contain chromophores — chemicals which absorb different wavelengths of light.

They can identify chemicals by the unique pattern of infrared wavelengths that they absorb.

Natural chromophores have a maximum absorption of around 560 nanometres, but one of the team's 11 modified chromophores was able to absorb red light with a wavelength of around 644 nm — tantalisingly close to infrared, which starts at about 750 nm (Science, doi.org/jxn).

And to know what to look for — water molecules absorb and emit different wavelengths of light when they're superhot and furiously jiggling — Bernath heated a tube of water in his lab to 2800 degrees.

An infrared laser is aimed at a sample of a chemical — gas, liquid or solid — and certain wavelengths are absorbed.

The wavelengths of the absorbed light reveal how the target molecule's chemical bonds vibrate, which in turn tells about the types and positions of atoms in the molecule, the kinds and strength of bonds among atoms and the symmetry of the molecule, Milo says.

But not all the sunlight would be absorbed by this electrode: light with a wavelength longer than 600 nanometres isn't absorbed by the rust - coloured water in the top cell so would pass through to strike the lower electrode, powering the production of hydrogen.

Some observations of how cosmic molecules emit and absorb light at ultraviolet wavelengths have hinted that the fine structure constant, responsible for the strength of electromagnetism, is not the same throughout the universe.

A new solar cell design could raise the energy conversion efficiency to over 50 % by absorbing the spectral components of longer wavelengths that are usually lost during transmission through the cell.

And by controlling the dimensions of the nanorods, specifically their aspect ratio (or length divided by width), you can control the wavelength of light they absorb.

A hydrogen atom can not absorb or emit light of any old wavelength.

Fox aims to turn these diamond films into a new kind of solar cell, one that generates electricity by absorbing heat rather than visible - light wavelengths.

Since different elements and compounds absorb light at characteristic wavelengths, astronomers can determine what chemicals make up a planet's atmosphere by measuring the relative amounts of light that come in at particular wavelengths.

The extra height will get them above most of the water in the Earth's atmosphere, which absorbs some of the infrared wavelengths they're interested in.

After decades of effort, physicists have probed the inner workings of atoms of antihydrogen — the antimatter version of hydrogen — by measuring for the first time a particular wavelength of light that they absorb.

After decades of effort, physicists have probed the inner working of atoms of antihydrogen — the antimatter version of hydrogen — by measuring for the first time a particular wavelength of light that they absorb.

Instead, it can absorb or emit light only of certain distinct wavelengths, as the electron in it jumps from one quantized energy level to another — the fact that a century ago spurred the invention of quantum mechanics.

One of the prime explanations for this low reflectivity — an abundance of minerals including the element iron, which strongly absorb certain wavelengths of light falling upon them — doesn't fit in this instance, researchers say.

Upon exposing a metallic surface to electromagnetic radiation that is above the threshold frequency or threshold wavelength (which is specific to the type of surface and material), the photons are absorbed and current is produced.

They also carefully study the frequencies of light the gas absorbs, looking for signs of a shift in wavelength that would be a clue that the gas is moving toward us or away from us.

«Light at certain wavelengths can be absorbed out of a thin optical waveguide by a microresonator — which is essentially a tiny glass sphere — when they are brought very close,» explained Gaurav Bahl, an assistant professor of mechanical science and engineering at Illinois.

The halo's gas absorbed some of that light and made the quasar appear darker in a very small wavelength range.

Some of the light passes through its atmosphere and key wavelengths of light are absorbed by atoms in the atmosphere leaving a fingerprint of its makeup.

The rib, he and his colleagues report, absorbed infrared light in wavelengths that match those of collagen from modern animals.