Sentences with phrase «light of a certain wavelength»

Light of a certain wavelength can be used to put so - called active materials into motion and control their movement.

Scientists hope that carbon may make a more efficient band - gap material — a material that excludes light of certain wavelengths and is therefore the photonic counterpart of a semiconductor — in future optoelectronics applications.

The first method requires a complex ligand, or compound, that strongly binds to a metal ion in a way that would allow for the complex to emit light of certain wavelength.

This gap affects how photons propagate through the material with light of certain wavelength ranges being able to pass through while light in other ranges is reflected.

In a peacock's mother - of - pearl tail, precisely arranged hairline grooves reflect light of certain wavelengths.

Not exact matches

Instead, researchers want to look at the effect of magnetism on certain wavelengths of infrared light emitted by the corona.

Ordinary lasers work by bouncing light between two mirrors, so photons of a certain wavelength accumulate.

Call up a fleet of viruses that self - assemble into patterns that reflect only certain wavelengths of light.

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

Pete Vukusic and Ian Hooper of Exeter University in England studied the colored parts of the swallowtail's wings and found that the scales that comprised them contain photonic crystals whose atoms are spaced so precisely that only certain wavelengths of light can pass through.

Neuroscientists usually explain color illusions in mechanistic terms: They arise because of the way cells in the retina and the brain respond to certain wavelengths of light.

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.

Butterflies create color by selectively adding and deleting certain wavelengths of light.

Water vapour in the atmosphere blocks certain wavelengths of light.

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

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.

Over the same period, signs of water ice — certain wavelengths missing from the light reflected back toward Earth — faded.

«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.

Moreover, because of limitations inherent in their design, metamaterials of this type designed for infrared and visible wavelengths have, so far, been shown to impart a negative index of refraction to light that is traveling only in a certain direction, making them hard to use for imaging and other applications that rely on refracted light.

This could lead to materials that can change colors or patterns on command or block certain wavelengths of light, while transmitting or amplifying others.

Through calculations and computer simulations, Atwater's team demonstrated that the trick to upping a material's thirst for light is to create more «optical states» for the light to occupy — which are like slots that can accept light with a certain wavelength, similar to the energy levels of electrons in atoms.

As this light courses toward Earth, it bumps into the interstellar atoms and molecules along the way, each of which can block certain wavelengths of light.

The possibility of such cells has been debated at least since the 1950s, when researchers found single neurons in the visual cortex of cats and other animals that respond to simple stimuli, such as lines oriented at a certain angle or moving in a specific direction, or light of a particular wavelength.

For example, some of these materials can channel light around an object so that it appears invisible at a certain wavelength.

Cone cells are specialized for certain wavelengths of light to help animals detect color, while rods can detect even a single photon and are specialized for low - light vision.

Cloud droplets absorb certain wavelengths of light depending on their size, so noting which wavelengths are missing in readings reveals the size of the droplets present.

Spectrometers can be tuned to detect the wavelengths at which scientists know a given element emits and absorbs light; scientists can then determine the element's presence by whether it emits or absorbs light of certain characteristic wavelengths.

Planetary atmospheres can block certain wavelengths of light, depending on what kind of chemicals they contain, so the fact that one wavelength of infrared radiation is blocked while another passes through can help astronomers understand that there's not only an atmosphere there, but also provide clues as to what it's made of.

Because they propagate only in certain directions, and with wavelengths that are much smaller than that of light in free space or standard waveguides, they could help to miniaturize optical devices for sensing and signal processing.

Optogenetics is the process of exposing neurons to certain wavelengths of light to stimulate or suppress their activity.

Light at certain specific wavelengths can be produced by gas molecules in these galaxies, and the wavelengths are stretched by the expansion of the Universe over the billions of years that it takes the light to reacLight at certain specific wavelengths can be produced by gas molecules in these galaxies, and the wavelengths are stretched by the expansion of the Universe over the billions of years that it takes the light to reaclight to reach us.

The linear variable filters in the CLARIOstar ® have variable coatings along their lengths that can reject or pass certain wavelengths of light.

There's structures inside the cells, inside the mitochondria that respond directly to certain wavelengths of near infrared light.

For the most part, vitamins are acquired when food is ingested, but some are acquired by other means: for example, microorganisms in the gut flora produce vitamin K and biotin; and one form of vitamin D is synthesized in skin cells when they are exposed to a certain wavelength of ultraviolet light present in sunlight.

You also need exposure to certain wavelengths of light in order for your metabolism to function optimally.

The addition of certain chemicals to the atmosphere will destroy wavelengths of light and it may only be a matter of time before one of these wavelengths of light that is critical for human survival is eliminated.

Another way is from certain wavelengths of the light that are reflected back and get absorbed by greenhouse gases and warm the atmosphere (mostly water vapor, methane and tiny amounts of CO2).

It has to do with light of different wavelengths (frequencies) that always moves in straight lines and stuff, hitting certain obstacles on their ways, it has nothing to do with thermodynamics

The «a-ha» moment came from developing compounds that change color when they absorb a certain wavelength of light but then will gradually disappear.