Sentences with phrase «emit light as»

It's also good, but the design means that it doesn't quite emit light as omnidirectionally as the 13 - watt 900 lumens model.

University of Wisconsin — Madison engineers have created a nanoscale device that can emit light as powerfully as an object 10,000 times its size.

Those charged particles can excite atoms in the ionosphere, which emit light as they return to their unexcited state.

It turns out that many molecules found in foods absorb ultraviolet or visible light and subsequently emit light as fluorescence.

Not exact matches

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.

Anyone following tech stories from month to month will recognize LG Display as those tech people focused on «bendy» and «rollable» displays, bolstered by the company's aggressive attention toward novel organic light - emitting...

Excelitas makes products such as light - emitting diodes (LEDs) and flash lamps which are used in applications ranging from medical lighting to aerospace and defense equipment.

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.

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.

This walker includes toys that emit sounds and lights, and as they are so colorful and entertaining, you may rest assured that your child is going to have great fun while sitting in it.

It is super similar to those professional treatments as it emits light energy that penetrates deep into the skin to reach the hair root.

One of the reasons this made it as our pick for one of the top LED grow lights is because it has veg / bloom switches that adjust the light spectrum being produced by the LEDs, optimizing the emitted light to encourage plants to flower or fruit.

This diffuser is perfect for long days, as it emits a calming light and mist that can help remind you to take a deep breath and continue with the day.

Porcar's team engineered gene switches in Escherichia coli to produce proteins that emit different coloured fluorescent light when factors such as heat, acidity and oxygen levels change.

Light from the galaxy is absorbed by the dust, emitted as infrared, and stretched to radio wavelengths as the universe expands.

MOCVD was then emerging as the technology of choice for producing exotic semiconductors, such as the ones capable of emitting blue light.

For starters, the bandage's not - so - secret key ingredient is phosphors — molecules that absorb light and then emit it via a process known as phosphorescence.

Engineers wanted blue and true green because with those colors, along with the red they already had, they could build fabulous things, such as a a white - light - emitting device as much as 12 times more efficient and 12 times longer - lasting than an ordinary lightbulb.

Most of the material in the universe is something called dark matter, mysterious stuff that doesn't emit or reflect light and doesn't interact with what we think of as ordinary matter.

«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.

The technique could be used as a detection sensor for hydrogen or oxygen gases as well as for property controls of organic semiconductors and organic light emitting diodes (OLEDs).

«This surprising finding may be an important clue to understanding those mysterious parts of the universe that make up 95 percent of everything and don't emit light, such as dark energy, dark matter, and dark radiation,» said study leader and Nobel Laureate Adam Riess of the Space Telescope Science Institute and The Johns Hopkins University, both in Baltimore, Maryland.

New theoretical models show that hydrogen in white dwarfs should emit blue light, not red as astronomers once thought.

And that means the material challenge posed by rare earths won't be solved anytime soon, particularly as more wind farms cover the land, compact fluorescent lightbulbs and light - emitting diodes proliferate, and greater numbers of hybrid or electric vehicles hit the road.

As a result, light - emitting diodes (LEDs) have become the light source of choice for the foreseeable future.

For example, light - emitting diodes, as they become more power efficient, are rapidly replacing conventional light bulbs.

They consist of nanometers - thick layers of light - emitting material, representing the quantum well, sandwiched between other materials that serve to guide both the injected electrical current as well as the output light.

And each gas emits a particular color as a result: Oxygen makes green light at common aurora altitudes, so that's what we see most often.

Another disadvantage is the high levels of radiant heat energy produced by high - pressure sodium lamps; up to 75 % of the energy from HPS lamps that is not converted to light is emitted as radiant heat energy, causing the surface of the lamps to reach temperatures as high as 450 °C.

These names come from the fact that some species as adults emit flashes of light to attract mates, using special light - emitting organs in the abdomen.

But technologies such as light - emitting diodes and liquid - crystal displays have now decoupled the two, giving an unearthly coldness to strange and new structures.

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).

A plastic optical fiber collects the emitted light, which is converted into an electric signal that appears as an image on a computer screen, allowing scientists to track cells without limiting the rats» mobility.

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).

In a proof - of - concept demonstration, eight pieces of the cut yarn battery were woven into a long piece that could power a belt containing 100 light emitting diodes (known as LEDs) and an electroluminescent panel.

For humans, the most worrisome insights revealed by the atlas are the effects of an ongoing shift to light - emitting diodes — LEDs — as sources of outdoor light over older incandescent illumination.

This powerful kilonova blast emits as much visible and near - infrared light every second as the Sun does every few years.

Stars are glowing balls of gas that through atomic processes release energy that is emitted as light and heat.

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

To construct the solar cell, the semiconductor molecules are deposited as thin films on glass with the same production methods used by organic light - emitting diode manufacturers.

To the observer on Earth, it looks as though the star is emitting pulses of light, hence the name «pulsar».

If these muons happen, in turn, to pass through something dense but transparent, such as water or ice, they emit flashes of light...

If a neutron star is left, it may have a very strong magnetic field and rotate extremely quickly, emitting a beam of light that can be observed when the beam points towards Earth, in much the same way as a lighthouse beam sweeping past an observer.

Unfortunately, the best light - emitting semiconductors, such as gallium arsenide (GaAs), are hard to integrate with the silicon of which chips are made.

Background Visible objects fall into two general categories: luminous objects (such as your computer monitor) that emit their own light and illuminated objects (your keyboard, for instance) that reflect light emitted by other sources.

In the past, numerous studies have identified black carbon aerosols emitted from combustion of fossil fuels and residential biofuels as the dominant light - absorbing aerosol over South Asia.

The fourth colony sometimes evolved «cheater» robots instead, which would light up to tell the others that the poison was food, while they themselves rolled over to the food source and chowed down without emitting so much as a blink.

«The mutants we made were excited by blue - green light of around 490 nanometres and emit green light as well.»

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.