Sentences with phrase «of emitting surfaces»

The intensity and distribution of radiant energy within this range is governed by the temperature of the emitting surface.

Yes... The 33 C number is in fact derived from empirical values: One compares the actual surface temperature to the surface temperature that would be required to satisfy conservation of energy in the absence of absorption of emitted surface radiation.

Its peak wavelength λmax is determined solely by the temperature of the emitting surface in accordance with Wien's Displacement Law, shown in its simplest form in Eqn.

Not exact matches

While the tabletop does get warm after some time, it's made of a tempered glass cool touch surface that won't burn and it does not emit any carbon monoxide — making it a safe addition to any indoor or outdoor area.

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.

Because similar plastic beads straight from the manufacturer don't emit DMS, it's likely that the scent comes from algae growing on the surface of the beads and from DMS that they adsorb via exposure to seawater.

While weather stations typically measure air temperatures just above the surface, satellites record the thermal energy emitted by soil, rock, pavement, grass, trees and other features of the landscape.

Hydrogel beads bounce thousands of times per second on a heated surface, emitting a high - pitched shriek, and generating lots of kinetic energy

LiDAR is a method of mapping from the sky: An airplane - mounted device sends a constant pulse of laser light across a swath of terrain; precise measurements of how long it takes the emitted breams to bounce off surfaces are taken and translated into topographic data.

Geologist John Michell wrote in a letter to the Royal Society that if a star were massive enough, «a body falling from an infinite height towards it would have acquired at its surface greater velocity than that of light... all light emitted from such a body would be made to return towards it by its own proper gravity».

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.

CH3OH is normally produced on the surface of dust, but when the temperature increases by some process, it will be released from the dust surface and turn into gas which emits radio waves.

Active regions that emit jets of gas and dust cover just 10 percent of the surface; the rest appears to be dormant and dry.

The presence of ice is inferred by measuring the energy of neutrons emitted from the lunar surface.

They found that 62412 has a very fast rotation that likely shifts material around its surface, some of which may be emitted to form the comet - like appearance.

Over a long period the earths surface temperature will remain approximately constant because the amount of heat absorbed as visible light is equal to the amount emitted as infrared light.

«New deposition technique enhances optoelectronic properties of lasers: Yield and efficiency of gallium nitride - based vertical - cavity surface - emitting lasers, a type of laser with potential applications in heads - up displays, automotive headlights, visible light data transmission, improved.»

The visible solar radiation mostly heats the surface, not the atmosphere, whereas most of the infrared radiation escaping to space is emitted from the upper atmosphere, not the surface.

A simple new electron - beam multilayer deposition technique for creating intracavity contacts — an important component of gallium nitride - based (III - nitride) vertical - cavity surface - emitting lasers (VCSELs)-- not only yields intriguing optoelectronic properties but also paves the way for others entering this realm of research.

«The animals emit a remarkably effective dim glow from their bellies that exactly matches the intensity and color of sunlight penetrating from the surface,» Widder explains, «so they aren't easily seen by predators swimming below them.»

No electrons are emitted for radiation with a frequency below that of the threshold, as the electrons are unable to gain sufficient energy to overcome the electrostatic barrier presented by the termination of the crystalline surface.

«Photonic crystal surface - emitting lasers are a very promising candidate for the next generation of high - quality, high - power compact laser systems,» Soljači?

One of the spacecraft's instruments measured neutrons emitted from the surface.

YAG (yttrium aluminium garnet) lasers emit ten super-short pulses of light each second, which superheat the paint, blasting it off in chips, rather than heating the surface.

Astronomers have seen the star emit a superflare that briefly made it 68 times brighter than usual, and could expose any life on the surface of its orbiting Earth - sized planet to fatal levels of UV radiation.

Light can also be scattered: The surface electrons can grab the photon's energy and then eject a photon of the same wavelength, which is how you see pretty much everything that doesn't emit light on its own.

From 240 miles above Earth's surface, lightning is visible as bright blotches, and city lights appear as yellow streaks; the atmosphere glows in bands of yellow, green, and red as energetic air molecules interact and emit light, a process (called airglow) that is difficult to see from the ground.

«By chemically modifying the nanotube surface to controllably introduce light - emitting defects, we have developed carbon nanotubes as a single photon source, working toward implementing defect - state quantum emitters operating at room temperature and demonstrating their function in technologically useful wavelengths,» said Stephen Doorn, leader of the project at Los Alamos and a member of the Center for Integrated Nanotechnologies (CINT).

The consortium instruments are designed to study a number of phenomena, including the interaction of 67P / C - G with the solar wind, a continuous stream of plasma emitted by the sun; changes of activity on the comet; the structure and dynamics of the comet's tenuous plasma atmosphere, known as the coma; and the physical properties of the comet's nucleus and surface.

Humans emit upwards of 106 biological particles per hour, and have long been known to transmit pathogens to other individuals and to indoor surfaces.

In addition, stars with surface temperatures of 3,300 kelvins or lower (red dwarfs of spectral type M2.5 such as Gliese 581, or redder) would emit so fewer photons towards the bluish wavelengths compared to Sol that the sky would appear whitish down to reddish to Human eyes (more from Earth Science Picture of the Day).

In the past, researchers have focused on maximizing the electrical current flowing inside of the solar cell, rather than maximizing the number of photons emitted when light hits the surface of the cell.

The way in which they are emitted and their speed on arriving at TGO will tell scientists about the composition of the surface layer.

The «colours» are due to differences in the surface temperature of starsw1: hotter stars emit most of their light in the visible blue or ultraviolet regions of the electromagnetic spectrum, whereas cooler stars radiate at longer wavelengths, in the visible red or infrared regions (see Mignone & Barnes, 2011a).

«The increased use of clean energy sources that do not emit greenhouse gases or conventional air pollutants... would be doubly beneficial to global food security, as they do not contribute to either climate change or increased surface - ozone concentrations,» she said.

It covers an area of 3000 square kilometers with approximately 1600 surface detector stations which detect cosmic ray shower particles directly, as well as four fluorescence detectors which overlook the atmosphere above the surface array and detect fluorescence light emitted by shower particles.

«The amount of energy being emitted by these eruptions implies lava fountains gushing out of fissures at a very large volume per second, forming lava flows that quickly spread over the surface of Io.»

«On such surfaces, called hyberbolic metasurfaces, the waves emitted from a point source propagate only in certain directions and with open (concave) wavefronts», explains Javier Alfaro, PhD student at nanoGUNE and co-author of the paper.

Waste water treatment plants receive large amounts of microplastics emitted from households, industry and surface run - off in urban areas.

Then they analyzed the different present - day simulations to compare the relative importance of heterogeneous ice crystal formation versus homogeneous ice freezing to identify the contribution from aircraft - emitted soot as compared to that from the Earth's surface sources.

Since most vehicle engines emit some nitrous acid that can infiltrate the passenger compartments, tests were also conducted on surfaces inside the truck of a heavy smoker, including the surface of a stainless steel glove compartment.

Stars shining in the night sky emit visible light with a high surface temperature of several thousands to several tens of thousands degrees.

The molecular structure of CO2 is such that it is «tuned» to the wavelengths of infrared (heat) radiation emitted by the Earth's surface back into space, in particular to the 15 micrometer band.

The magical far infrared rays (FIR) emitted by amethyst gently raise the surface temperature of the skin to aid in her healing process.

Microwaves do, make no mistake, emit radiation, and the FDA has established what it considers «safe» levels for microwaves: over the machine's «lifetime» the allowable level is «5 milliwatts of microwave radiation per square centimeter... approximately 2 inches from the oven surface.»

The greenhouse gases absorb some infrared radiation emitted by the surface of the Earth and in turn radiate the absorbed energy back to the surface.

The new turbocharged V - 8 is a never - ending well of power and emits a luscious and enticing sound from its quad exhaust; the cabin is the epitome of Mercedes luxury with leather, carbon fiber, and real metal swathed across every surface; and the exterior design is breathtaking in its sultry undulations and intricate surface detailing.

Its electroluminescent membrane can be switched on at the touch of a button when closed, emitting a pleasant, diffused light over its entire surface.

The Whipple supercharger emits a friendly whine at idle, the whimpering of an engine that wants to rev. Given the chance to clip an apex, the GT350 hunkers down neatly, its live rear axle forgotten about on smooth surfaces.

Unlike LEDs, which emit their light in the form of points, OLEDs light up over their full surface with a homogeneous effect.