Sentences with phrase «of emitted light»

And, since blue light is most easily scattered by our planet's atmosphere, many fear that an increase in the use of LEDs may substantially increase light pollution even if the total amount of emitted light holds steady.

They also predict that the colour of the emitted light should be tunable by changing the molecular structure and / or composition of the material.

According to this model, the size of the bandgap and the wavelength of the emitted light depend on how many impurities the silicon contains, and the luminescence is tuned by alloying, with elements such as oxygen or carbon, for example.

The scientists had noticed that when they embedded LEDs in coated textiles or transparent materials, the color of the emitted light would sometimes change.

The wavelength of emitted light grows, that is, the energy decreases, along the gold nanorod array.

By heating the crystal and changing the arrangement of its atoms, they could control the amount of light scattering within the laser and hence the color of emitted light.

By correlating the local effects of this emitted light with the position of the electron beam, spatial images of these effects can be reconstructed with nanometer - scale resolution.

The top layers were rotated relative to the lower layers, and the degree of rotation determined the wavelength of the emitted light.

Using this method, we were able to determine the colour of the emitted light and finally the extension of excitation energy over the chain - like polymers,» explained Dr. Richard Hildner, who coordinated the research at the University of Bayreuth.

Dr. Lena Simine and Prof. Dr. Peter J. Rossky carried out extensive calculations on the impact of polymer structures on the colour of the emitted light.

A specialized imaging detector collected all of the emitted light, producing ultrasharp resolution.

Although previous supernovas have been seen this early, the new observation is the earliest one with a spectrum — an accounting of the emitted light broken up by wavelength — taken six hours after the explosion, Yaron and colleagues report online February 13 in Nature Physics.

«Depending on the camera's configuration, we can measure either the brightness or color of the emitted light across the bandage or the change in brightness over time,» Li said.

By using two of the world - leading VLT spectroscopic instruments, MUSE and X-shooter, they could carry out a very detailed study of the properties of the emitted light to determine its source.

I believe that the sun is powered by the nuclear fusion of hydrogen in to helium, because the spectrum of the emitted light is exactly as predicted by theory and tested by experiment on earth.

Not exact matches

Miller said he doesn't know specifically how the hospital staff used his ultraviolet light - emitting robots to prevent the spread of the virus while Duncan was undergoing treatment.

The screen is also the first from Apple to use organic light - emitting diode (OLED), instead of the liquid - crystal display that Apple has used in all other iPhones, including the iPhone 8.

The tiny sensors, which consist of infrared light - emitting diodes (LEDs) coupled with a sensitive light detector, measure infinitesimal gradations in light in human tissue, due to changing blood volume in the microvasculature as blood circulates through the body — a process that follows in rhythm with the beating of the heart.

The sun emits certain «blue rays» of light that tell your body it's time to be alert.

A study released in November of 12 participants who spent two weeks in a Boston sleep - research lab discovered that using light - emitting e-reader devices can have negative effects on sleep quality.

Electronics and artificial lights emit blue light which suppresses a person's circadian rhythm and the secretion of the sleep hormone melatonin.

While TV purists take solace in the emergence of organic light - emitting diode (OLED) TV displays, plasma takes its place among Betamax, HD - DVD, Sega and other arguably superior formats that eventually lost out to consumer demands for convenience and a low price.

Apple released the iPhone X last year with a variety of new components, including an organic light - emitting diode (OLED) screen and a face scanner the company calls Face ID.

The lenses support the eye's effort in focusing at ultra - near distances that are typical of handheld devices by filtering out «harmful blue - violet light emitted by digital screens.»

Scientists note that «the use of light - emitting devices immediately before bedtime is a concern because of the extremely powerful effect that light has on the body's natural sleep / wake pattern and how that may play a role in perpetuating sleep deficiency.»

Cell phones emit blue light, which negatively affects the secretion of the sleep - inducing hormone melatonin and prohibits a good night's sleep.

LED (light emitting diode) lamps for automotive applications seem to be taking off like a wildfire lately with even some of the least expensive econo - boxes sporting this high - tech...

The resulting theory, though founded on quite different principles and developed in an independent fashion from Einstein's theory, nevertheless gives predictions that are identical to the latter's, within observable limits, for each of the four classic tests of gravitational theories (i.e., precession of the perihelion of Mercury, redshift of light emitted by a massive body, the bending of light - beams in a strong gravitational field, and the apparent slowing of the speed of light propagation near massive bodies).

Hansen's assessment is simple: we need, as a planet, to be emitting less carbon dioxide inside of ten years — an enormous task given that China and India are finally beginning to use power in appreciable quantities (and not for luxuries but for the second light bulb or first refrigerator in a house).

While not quite as efficient as HID lights, these fluorescents have better color rendering properties (more of the light emitted is used by the plant) and produce much less heat when compared to HID lights.

The high pressure sodium lamp emits more lumens of light than a metal halide lamp.

When ATP comes into contact with the liquid - stable luciferase / luciferin reagent in the SystemSure's testing swap, light is emitted in direct proportion to the amount of ATP present.

The Cuddle Cub emits a heartbeat sound and a very light, gentle vibration when hugged, so it reminds the little one of mommy.

-- especially the blue wavelengths of light emitted by many light bulbs and electronic screens — is particularly bad for sleep.

Toys like this emit a little bit of light, and play soothing lullabies for a few minutes.

This is the type of light emitted from electronic devices and most household lightbulbs.

The HPA tested a sample of compact fluorescent light bulbs (CFLs) and found that some emitted ultraviolet radiation which could, under certain conditions, expose people above international guidelines.

In recent months, state agencies have been approving millions of dollars in grants and loans for tech parks outside of Utica and Buffalo to help them attract manufacturers from the semiconductor industry, which covers everything from computer chips to solar panels and light emitting diodes.

When the atom drops from the higher to the lower energy state, it emits a photon, or light particle, in the form of a radio wave 21 centimeters long.

The results are consistent with those from the cosmic microwave background — light emitted billions of years earlier.

Deuterium, helium, and lithium nuclei each absorb and emit light in a unique way, allowing scientists to point telescopes at I Zwicky 18 and determine the abundances of ancient nuclei very accurately.

It was not until the detection of quasars, which allow astronomers to see the light emitted by matter falling into black holes, that we had evidence that they were real objects and not just mathematical curiosities predicted by Einstein's general theory of relativity.

Infrared light is a good probe of the magnetic field because stronger magnetic fields change the way light is emitted in that range.

These molecules initially comprise just a small fraction of the gas, but they can absorb heat from the surrounding gas and get rid of it by emitting light, thereby cooling the cloud enough for stars to form.

Trapped beneath Earth's ocean of air, ground - based observatories will be stymied by starlight - warping turbulence, and by airglow — faint light emitted by atmospheric chemical reactions that can corrupt delicate observations.

The SMC is full of dust, and the visible light emitted by its stars suffers significant extinction.

Magnetic fields make the higher energy levels split into two new levels, so electrons dive from two different platforms and emit different particles of light.

At a conference, another astronomer asked him if the center could archive a terabyte of data that had been collected from the MACHO sky survey, a project designed to study mysterious cosmic bodies that emit very little light or other radiation.

A Giant Galactic Ghost Intrigued by faint blurs on old photographic plates of the Virgo galaxy cluster, a nearby region teeming with galaxies, Oregon's Bothun and colleagues wondered if the apparitions might be smallish galaxies with «low surface brightness» — astronomer - speak for emitting less light per unit area than typical galaxies.

WASP - 12b does, however, emit light because of its high temperature, giving it a red hue similar to a hot glowing metal.