Sentences with phrase «just emit light»

Gas does not just emit light, it can also absorb light.

Not exact matches

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.

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.

The research group there included one of us (Nakamura), who had just received the Millennium Technology Prize for creating the first light - emitting diodes (LEDs) that emit bright blue light.

«For years, people were just throwing away that base current, and it was dissipated as heat,» says Holonyak, who invented the first practical light - emitting diode 44 years ago.

Emitted in a distant galaxy when multicellular life was just beginning to populate Earth, the waves traveled at the speed of light for more than a billion years to at last wash over our planet last September, taking just seven milliseconds to traverse the distance between LIGO's twin listening stations in Louisiana and Washington State.

But the images suggest that scientists will want to take advantage of the DNB's images in multiple ways: not just to study clouds, but also to assess disasters such as power outages (such as before and after Superstorm Sandy last month), to study gas flares and estimate volumes of CO2 emissions, or to keep an eye on illegal unreported fishing (the boats emit light to draw in their stocks).

This quasar is only slightly smaller than the previous distance record - holder, which weighs as much as 2 billion suns and whose light is 12.9 billion years old, emitted when the universe was just 770 million years old (SN: 7/30/11, p. 12).

Auroras emit light in colors across the visible spectrum, but just a few dominate, with green being the most common color.

A pulse of visible light just 380 attoseconds long served as a flashbulb to probe how electrons emit photons when struck with light

And just like a genuine black hole event horizon, the artificial one created by the light pulse can emit radiation.

These particles can interact with water, emitting a shudder of light, albeit under such rare circumstances that just a few of them strike each square mile of ocean each year.

Most lasers emit light of just one wavelength, or color.

When these gamma rays reach the Earth's atmosphere they are absorbed, producing a short - lived shower of secondary particles that emit weak flashes of bluish light known as Cherenkov radiation, lasting just a few billionths of a second.

Two supermassive black holes orbiting just a fraction of a light - year apart should emit such waves and then give off a burst of them when the black holes merge.

«Depending on their kinetic and electronic energy we can predict whether they will emit light, or whether they just escape from the atmosphere altogether,» says Lars Andersen of the University of Aarhus in Denmark.

By studying far - flung galaxy clusters, astronomers are able to look back in time at the state of those objects millions or even billions of years ago, when the light just now reaching us was emitted.

A team of MIT researchers has used a novel material that's just a few atoms thick to create devices that can harness or emit light.

And it's not just about brightness; the cycle of exposure and the wavelengths artificial lights emit also likely play a role.

The wavelength range in which a given semiconductor can emit light — also known as its bandwidth — is typically limited in the range of just tens of nanometres.

The young couple only emit infrared light because of the residual heat from their birth, just 10 million years ago.

«There you have actual combustion occurring — so instead of just having light being reflected by all these particles, you actually have light being emitted by particles,» Ebert says.

The researchers determined the planets» spectra by subtracting the light emitted by each star from the combined light radiated by the star and planet, leaving just the planet's light spectrum.

Of current instruments, only ALMA has the characteristics required to reveal these mysteries, by observing, in depth, star - forming clouds and detecting the soft light emitted by matter which is just beginning to warm up, and even mapping its movement.

The three new detections of radio - emitting brown dwarfs are just the first results from the systematic study, which aims to observe all the known brown dwarfs within about 45 light - years of Earth.

As such, the work shows that graphene (combined with other flexible 2D materials) is not just limited to simple electronic displays, but could be exploited to create light emitting devices that are not only incredibly thin, but flexible, semi-transparent, and intrinsically bright.

And just to add insult to injury, many modern devices emit blue light from light - emitting diodes (LEDs)-- light that's especially good at suppressing melatonin.

The Prius V's LED (light emitting diode) headlights aren't just great at lighting up the road ahead either.

The instrument cluster uses an organic light - emitting - diode (OLED) display, just like the crispest and priciest monitors.

A regular book read under an old - fashioned soft light (new LED lights also emit more blue light) is just the type of quiet nighttime activity that doctors recommend to improve sleep.

This means it reflects light, just like paper, making it generally more comfortable to read and providing a wider viewing angle than in the case of conventional backlit flat panel displays, which are light - emitting.

As an added bonus, the way in which the technology works also makes e-paper displays reflective, which means that the light from the environment is reflected from the surface of the display towards the user's eyes, just as with traditional paper, with the display emitting no light itself.

An iPad, just like any other device with an LCD color display (not only tablets but also phones) emits light directly into your eyes.

The artwork of Alexiou is dark and turbulent, just as was the way of his approach to the transcendental of Orthodoxy and Monasticism, in relation to the universal experience of the artwork of Gavaise that emits lots of light and power.

JB, I've just shown that the 30,000 Watts of constant heat output from combustion by a light car completely gazumps the miniscule 0.2 W.m @ of re-emitted energy from 168 gms of CO2 emitted from the car over a kilometre.

looking at another analogy, the energy emitted by a 100 watt incandescent lightbulb, that emits heat and light across a wide range of frequencies, but lets just use heat and say that three feet from the bulb, it is IR, and we were to put a globe of aluminium foil around it to prevent convection, and in another simultaneous experiment we were to line the foil at the same distance with black paper or another blackbody material.

To prevent potential prey from spotting its shadow on the seafloor, the bobtail squid emits just enough light to match the moonlight shining upon it.

LED Lighting for Stores And in a story just posted by SNEWS, Timberland have announced that 49 of their 70 North American stores will convert to Light Emitting Diode (LED) lighting, resulting in an estimated annual decrease decrease in carbon emissions by 505 metricLighting for Stores And in a story just posted by SNEWS, Timberland have announced that 49 of their 70 North American stores will convert to Light Emitting Diode (LED) lighting, resulting in an estimated annual decrease decrease in carbon emissions by 505 metriclighting, resulting in an estimated annual decrease decrease in carbon emissions by 505 metric tonnes.

They are deploying a tactic called counter-illumination — they emit just enough light to match the moonlight from above, effectively erasing their shadows from the seafloor so that predators can't stalk them by the dark shape below.

Recently completed just in time for the museum's summer activities, Sabin's Lumen installation is made up of recycled textiles, and special «photo - luminescent and solar active yarns» invented by Sabin that can absorb, emit light and change colour.

Just like yellow light is not absorbed or emitted by H atoms, IR is not absorbed or emitted by N2 & O2.

This being an OLED display, there's no backlight to speak of, so it's just poor brightness uniformity across those light - emitting diodes.

Just a few years ago, the South Korean tech giant was heavily promoting OLED (organic light - emitting diode), butting heads with compatriot LG Electronics.

Gauss glasses just add another layer of protection because unless you completely turn off the blue color channel in your monitor it still emits blue light.

Dubbed the LIFX +, this innovative new bulb functions just like any other light bulb on the planet in that it's capable of providing a dark room with light — but its ability to emit infrared light puts it in a class of its own.

Light Emitting Diode (LED) lightbulbs have been around for a while now, but they are a tried and true method for making a home just a little bit greener.