Sentences with phrase «emit light only»

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.

By emitting light only one photon at a time, one can then control the photons» quantum properties for storage, manipulation and transmission of information.

Not exact matches

For future clinical applications, the pajamas will only emit their blue light inward, directly onto the child's skin.

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).

By covering these roofs with large, flat arrays of cylindrical thin - film solar cells (think massive installations of fluorescent tubes, only absorbing light rather than emitting it), Fremont, Calif. — based Solyndra, Inc., hopes to harness that energy.

As brown dwarfs are nearly invisible in the optical light and only emit radiation in the IR regime, they exhibit different colors in that range.

But only atoms with a specific energy can emit the green light.

Not only might teens be using their phones when they would otherwise be sleeping, the authors note, but previous research suggests the light wavelengths emitted by smartphones and tablets can interfere with the body's natural sleep - wake rhythm.

The only thing scientists knew about it was that it neither emitted nor absorbed light.

HATS - 6 emits only one twentieth of the light of our sun.

The color is determined by the light's wavelength, and most lasers emit at only one wavelength.

As a result, the OLED microdisplays not only emit light, but also perceive the surroundings.

Notably, one can determine the mass of the matter that is bending the light — including the mass of the still - enigmatic dark matter, which does not emit or absorb light and can only be detected via its gravitational effects.

If that's right, all five planets lie closer to their star than Mars does to ours; however, Tau Ceti emits only 45 % as much light as the sun, so each planet receives less warmth than a planet would at the same distance from our sun.

Yet the total light emitted by the galaxies of Eridanus A is only twice that of the Milky Way.

A team led by Prof. Laszlo Veisz has developed a novel high - power laser capable of emitting bursts of infrared light — each consisting of only a few oscillation cycles — which contain 100 times as many photons per pulse as in conventional systems.

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

Not only did it conduct electricity, it also emitted a white light, which is unusual.

Only when we look at galaxies billions of light - years away, collecting the light they emitted billions of years ago, can we see that the most distant galaxies are moving more slowly than we would expect from observations of nearby galaxies, an indication that the universe has since sped up.

The standard explanation for this is that the atoms in the atmosphere of the star absorb some of the light which is emitted, and each element absorbs only some distinct, characteristic wavelengths of light.

A critical breakthrough in the CINT nanotube work was the ability of the team to force the nanotube to emit light from a single point along the tube, only at a defect site.

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.

Actually, as for almost all planetary nebulae, most of the visible light is even emitted in one spectral line only, in the green light at 5007 Angstrom (see our planetary nebula description)!

Cosmic background radiation — that amazing «first light» emitted when the Universe was only a few hundred thousand years old — exists mainly in the form of microwaves.

Their dim light makes this difficult, and eventually the visible light left over from their birth fades completely beyond the red end of the visible spectrum, and they emit only infrared light.

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.

If the quasar is so distant that the light we observe from it escaped during the «dark ages», its UV light will have been absorbed by the neutral hydrogen present at the time; if the quasar is closer and the light we observe was emitted only after the reionisation, there will have been no neutral hydrogen to impede it (see diagram below).

Electronics and artificial lighting emit blue light, which only occurs in nature during the brightest part of the day.

Not only can binge - watching tempt you to bypass your bedtime, but the blue light that screens emit can keep you up if you watch too close to turning in.

Not only can the «dings» of text messages wake your kid up, but the blue light that many devices emit may promote wakefulness (not what you want at 8:30 pm!).

At The Monster Cycle, the only light emitted is from the giant flat screens illuminating your instructor while you cycle to the beat of the most popular music videos and obscure songs you'll want to download the next day.

It only took a few lazy Google searches to find out exactly why: blue light (the kind of light emitted by devices like computers, cell phones and iPads) suppresses melatonin, a.k.a. the handy dandy hormone that regulates your circadian rhythm and signals to your body that it's time to go the eff to sleep.

Options include navigation (ES only), bumper and side - sill extensions, an illumination package with light - emitting diodes inside and out, and park - assist sensors.

Audi plans to introduce a new concept car at this September's Frankfurt auto show, but so far the German automaker has confirmed only that the model will use new OLED (organic light - emitting diode) taillights.

Lead researcher Prof Charles Czeisler told the BBC News website: «The light emitted by most e-readers is shining directly into the eyes of the reader, whereas from a printed book or the original Kindle, the reader is only exposed to reflected light from the pages of the book.»

If you browse through the article and look at the actual test, the researchers state that they used only I - PADs, which they equate with Light - Emitting eReaders.

«The light emitted by most e-readers is shining directly into the eyes of the reader, whereas from a printed book or the original Kindle, the reader is only exposed to reflected light from the pages of the book,» the study's lead researcher Charles Czeisler, told the BBC.

Specifically mentions Light - Emitting Readers, so that will include the Kindle Paperwhite, which has only an intensity setting, not a colour change option.

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 only flashes of something more bombastic is the two large panels at the side that emit light, which can be turned off entirely or have the color changed to match an existing setup.

The light emitted from these light beacons is in the form of randomized Tetris-esque shapes so it takes a little work getting them to fit together optimally, but they are pretty hands as not only do they illuminate the enemies, but they slow them down significantly too.

At Ace in 2002 there would be no works on view, and the only lighting would be provided by small, pressure activated LED flashlights that emitted a point of blue light.

The black - light paintings reveal their true nature — and actually emit light — only when «excited» by ultraviolet bulbs.

If one could see the IR light, an opaque atmosphere would make the pattern of emitted IR diffuse since only the IR from the upper levels of the atmosphere escape to space after it has been absorbed and re-emitted by the greenhouse gases (this of course depends on the wavelength of the IR and the absorption spectrum, but we can use this assumption for heat loss integrated over the whole IR spectrum).

This has not only changed the dynamic of the negotiations, but cast the «villains» of past summits in a slightly different light, and pointed the spotlight on other emitting giants.

Visible light makes up only 46 percent of the total energy emitted from the sun, while 49 percent is in the infrared band, which we experience as heat.

You're repeating another AGWSF sleight of hand meme here, «most» — how is it most when for example, an incandescent lightbulb emits only 5 % visible light and 95 % thermal infrared heat?

And almost everyone else assumes that all visible light is only absorbed and then once heated from this absorption of energy, it radiates as blackbody [it emits energy according to it's temperature].

«High purity carbon nanotube thin films not only have the potential to make inroads into current applications but also accelerate the development of emerging technologies such as organic light - emitting diodes and organic photovoltaic devices.

Sodium vapour absorbs only yellow light but also emits only yellow light, that's why sodium lamps are so efficient.