Sentences with phrase «ultraviolet light emitted»

My work currently focuses on observations of the ultraviolet light emitted from small stars, and in particular flares of that emission.

This condition is produced by the strong ultraviolet light emitted from the very luminous, hot stars embedded in the gas.

[2] Neutral hydrogen gas absorbs all the high - energy ultraviolet light emitted by hot young stars very efficiently.

The EUSO telescope, which will be used to find debris, was originally planned to detect ultraviolet light emitted from air showers produced by ultra-high energy cosmic rays entering the atmosphere at night.

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 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 addition to emitting visible light, the stars also gave off ultraviolet (UV) radiation, which split the neutral hydrogen it encountered into electrons and protons — ionizing it once again, and thereby launching what researchers call the «epoch of reionization.»

These fluctuations correspond neatly to the 11 - year solar cycle, in which the Sun's rotation gradually winds up its magnetic field into contorted coils, giving rise to flares and sunspots that emit ultraviolet and X-ray light.

An additional advantage is that LEDs don't emit ultraviolet light, so they don't attract bugs.

Ideally, the electron gains so much energy in the laser field that upon impact with the atom, a much shorter flash of light with very high energy is emitted — an attosecond laser pulse, with a frequency in the ultraviolet - or x-ray regime.

Its nucleus is predicted to emit and absorb ultraviolet light.

This image shows in ultraviolet light the second - largest flare (bright flash at right), which was emitted on September 10.

The eruption had also emitted ultraviolet light that reflected off interplanetary hydrogen gas and back into SOHO's cameras.

Collapsing out of dense pockets of hydrogen gas early in the universe's history, the first stars flickered on, emitting ultraviolet light that interacted with the surrounding hydrogen.

In either case, sulfur atoms in the Mercurial atmosphere would emit detectable ultraviolet light.

Roth and his colleagues instead went looking in Hubble's ultraviolet images, which can capture the light emitted when hydrogen and oxygen molecules collide with stray electrons.

Some observations of how cosmic molecules emit and absorb light at ultraviolet wavelengths have hinted that the fine structure constant, responsible for the strength of electromagnetism, is not the same throughout the universe.

The first stars emitted mainly optical and ultraviolet light, which today is stretched into the infrared by the expansion of space, so they should not contribute significantly to the CXB.

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

«Returning clumps of debris strike the incoming stream, which results in shock waves that emit visible and ultraviolet light,» said acting Swift principal investigator and study co-author Bradley Cenko, of NASA's Goddard Space Flight Center in Greenbelt, Maryland.

The gas glows because young, extremely hot stars like these are emitting intense ultraviolet light which strips the surrounding gas of its electrons and causes it to emit the faint glow seen in this image.

The Leiden scientists replicated the frigid vacuum of interstellar space, then introduced the chemicals found in cometary ice and hit them with ultraviolet light like that emitted by stars.

In fluorescence microscopy, certain specimens, such as TB bacteria, can be dyed so that they emit light when exposed to ultraviolet radiation.

For artificial lighting throughout the museum, conservators chose novel bulbs that use ultraviolet LEDs rather than the standard blue ones, and different blends of light - emitting phosphors that better approximate natural light when operated at the low intensity needed to avoid damaging fragile pigments.

Then, while is being irradiated with ultraviolet light, it emits a bluish light, which varies in intensity proportionally to the quantity of methylmercury and inorganic mercury present in the fish,» explains Tomás Torroba, lead author of the paper.

When the plant was exposed to ultraviolet light, it excited electrons in the gold, causing them to emit a violet - blue light.

The problem with today's resist, however, is that it was originally developed for light sources that emit so - called deep ultraviolet light with wavelengths of 248 and 193 nanometers.

In its bulk (non-nanoscale) form, gallium nitride emits light in the blue or ultraviolet range.

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 hottest stars also emit a significant fraction of their light in the ultraviolet band and the coolest stars emit a significant fraction of their light in the infrared band.

Some examples of stretchable ultraviolet (UV), visible, and infrared (IR) photodetectors and organic light - emitting diodes (OLEDs) which have stretchability in uniaxial and multiaxial directions are demonstrated by adopting a unique geometric engineering of the layers in the devices.

The moss consists of hot gas at about two million degrees Fahrenheit which emits extreme ultraviolet light observed by the TRACE instrument.

Solar moss consists of hot gas at about two million degrees Fahrenheit which emits extreme ultraviolet light observed by the TRACE instrument.

Many of the young stars that formed in a recent burst of star formation emit the ultraviolet light.

The distance to the quasar is so great (about 10 billion light - years) that the emitted light is «stretched» by the expansion of the universe from an invisible ultraviolet wavelength to a visible shade of violet by the time it reaches the 10 - meter Keck I telescope and the LRIS (Low Resolution Imaging Spectrometer) used for this discovery.

For example, the ultraviolet light comes from the youngest and most massive stars, while the optical and near - infrared continuum light is emitted mostly from more evolved stars.

These star - formation rate estimators include the ultraviolet light that is emitted from young stars, the infrared light that shows how much of the ultraviolet light was absorbed by dust, and the nebular emission lines that are caused by young stars making the clouds of gas around them glow and radiate.

Scientists now know that lutein and zeaxanthin act as natural antioxidants and absorb damaging blue light (such as that emitted by computer screens) and ultraviolet light from the sun.

Phototherapy is simply narrowband ultraviolet B light that is emitted from a special machine at 311 - 312 nm.

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

A gas which is having it's «other degrees of freedom» excited and emits ultraviolet light which the powdered surface absorbs and re-emits whitish visible light.

And say ultraviolet and visible light are small portion of LTM and LTM is mostly IR light So the Sun is almost entirely emitting LTM and LTM is comprised of what could be called shortwave: Ultraviolet thru visible to Neaultraviolet and visible light are small portion of LTM and LTM is mostly IR light So the Sun is almost entirely emitting LTM and LTM is comprised of what could be called shortwave: Ultraviolet thru visible to NeaUltraviolet thru visible to Near Infrared.

This appears to be a deliberate deception which has been so successful that the public now believe the Sun emits ultraviolet and visible light while the warmed Earth emits infrared with 4 microns being the boundary between the two.

All hot objects emit electromagnetic radiation, which includes radio waves, visible light, and x - rays, as well as ultraviolet and infrared radiation.

The Declaration of Independence is lit by a Fiberstars system because the light source does not emit ultraviolet rays or heat.

Many hospitals have turned to state - of - the - art approaches to help fight these type of infections, including robots that emit hydrogen peroxide vapors or ultraviolet light.

These lights emit no ultraviolet or infrared rays or direct heat onto the surface of the artwork, helping to keep it in good condition.