Sentences with phrase «much ultraviolet»

The ozone layer would be quite good at its job of protecting Earth from too much ultraviolet radiation - that is, it would if humans did not contribute to the process.

Animals evolved or were created with fur or hair that prevented too much ultraviolet light from damaging skin and eyes, or having other bad effects on health.

When DNA molecules are exposed to too much ultraviolet radiation, their atoms can become over-excited, and accidentally bond in ways that result in molecular injuries known as dimers.

As a result, the star «radiates so much ultraviolet radiation that it may completely evaporate the planet.

«We know the cause of skin cancer — too much ultraviolet light,» says James Spencer, vice-chair and director of dermatologic surgery at Mount Sinai School of Medicine.

Not exact matches

Inside the cavity is much thinner gas, heated and glowing from the stars» ultraviolet light.

They're much closer to their sun than we are to ours, so TRAPPIST - 1's ultraviolet radiation would likely strip away most of their atmospheres.

The study notes that indoor tanning products can produce 10 to 15 times as much UV radiation as the midday sun, and supports the recommendation of medical groups, including the American Academy of Pediatrics, to minimize ultraviolet exposure, including from indoor tanning.

Shedding light on the Dark Ages When the first stars formed, their intense ultraviolet light «reionized» the universe, stripping electrons from much of the hydrogen.

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.

Haigh's measurements showed that visible radiation increased between 2004 and 2007, when it was expected to decrease, and ultraviolet radiation dropped four times as much as predicted.

Flowers leap out from much darker - looking leafy backgrounds, and they have ultraviolet - reflecting landing strips that show the way to the nectar.

They can also be used for biological labeling because of their low toxicity, chemical stability, and intense luminescence when excited by near - IR radiation, which can penetrate tissue much better than higher energy radiation such as ultraviolet, as is often required with quantum dot labels.

Dr Sobral said: «Stars and black holes in the earliest, brightest galaxies must have pumped out so much high energy / ultraviolet light that they quickly broke up hydrogen atoms.

The trick worked because relevant phonon peaks can be seen with much better resolution in the spectrum of nickel oxide under ultraviolet laser excitation,» Balandin added.

Such physical changes to the atmosphere might last only hours or days, he notes, but any subtle chemical changes — including those resulting from the extra hydrogen added to the air when ultraviolet light breaks down the water vapor — would persist much longer.

In addition, ultraviolet light from newborn massive stars as well as gas heating and ram pressure from supernova explosions blows much of a galaxy's gas away into intergalactic space.

Vijayvargia's team of master's degree students recently designed and built a DNA gel electrophoresis unit with power pack and ultraviolet illuminator that would cost as much as $ 2000 commercially; their version cost about $ 35.

To their surprise, Fox and his colleagues detected so much absorption of the background ultraviolet light that they concluded the Magellanic Stream must contain far more ionized gas than neutral gas.

On Earth, temperature inversion occurs because ozone in the stratosphere absorbs much of the sun's ultraviolet radiation, preventing it from reaching the surface, protecting the biosphere, and therefore warming the stratosphere instead.

For example, birds of prey have much greater visual acuity than humans and some, like diurnal birds of prey, can see ultraviolet light.

The ultraviolet detector determines how much ozone the atmosphere has, and the infrared detector measures how much carbon dioxide and water vapor there is in the atmosphere.

Their photographic scavenger hunt yielded two materials — seeds and mouse urine — that were much more visible through the mouse's green and ultraviolet system than through human color vision.

Then he set up a plasma lamp to fire beams of ultraviolet light at the chamber, much like the radiation present in planet - and star - forming regions of dust clouds.

I think it would be lost much more rapidly by ultraviolet degradation or through erosion by the solar wind.

«Much like cave salamanders that have lost their eyes after being in the dark, owls too appear to have lost their violet opsin — the receptor birds use to see violet and ultraviolet light,» Dumbacher says.

Much of the water Mars once held was lost over time due to ultraviolet light from the Sun breaking apart water molecules.

Especially eye - catching are bright points that flash up occasionally — much richer in contrast in these ultraviolet images than have been seen before.

In some, as much as 10 per cent of the excitation energy in the form of ultraviolet light is re-emitted as visible light.

Infrequent tanners, as well as «safe» tanners who seek to achieve an ideal tan without ultraviolet methods (sprays, lotions or bronzers) are much less likely to engage in behaviors that may convey certain stereotypes, such as tattoos or piercings with visual symbols or messages.

«We don't really know why it is so much stronger at Venus than Earth,» said Collinson, «but, we think it might have something to do with Venus being closer to the sun, and the ultraviolet sunlight being twice as bright.

On Titan, where solar ultraviolet radiation is much weaker and oxygen - bearing molecules are substantially less abundant, methane can last 10 million to 100 million years (which is still a short time in geologic terms).

New research suggests the Sun might be headed towards a «grand minimum» of a centuries - long cycle, during which the Earth would receive much less ultraviolet radiation.

Like Sirius, however, Altair radiates much more in ultraviolet wavelengths than Sol, and, not surprisingly, the European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Altair.

Like Sirius, however, Vega radiates much more in ultraviolet wavelengths than Sol, and, not surprisingly, the European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Vega.

Life could eventually spread farther when such stars evolve pass their flare stage, since spectral - type M stars emit much less ultraviolet radiation once they quiet down.

«Without a way to take it out of the atmosphere quicker, our measurements indicate there can not be much methane being put into the atmosphere by any mechanism, whether biology, geology, or by ultraviolet degradation of organics delivered by the fall of meteorites or interplanetary dust particles.»

It contains a lot of ozone, which helps block much of the sun's biologically damaging ultraviolet radiation.

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.

Your body creates Vitamin D when your skin is exposed to ultraviolet light and this is a good thing, but too much Vitamin D is not necessarily a good thing.

Remember to stay away from too much sun as UV (ultraviolet) rays can damage and dry out the skin, and free radicals in the environment can reduce skin elasticity, which causes wrinkles.

Ultraviolet light exposure does help psoriasis, however, so a little sunshine (not too much, because sunburns can make psoriasis worse) on psoriasis plaques can be a good thing.

Milk Makeup Holographic Stick offers a sheer, ultraviolet lavender - pink glow that looks heavenly on pretty much every complexion.

Not only does the movie service promise movie and TV shows to rent or buy, but it integrates with Ultraviolet, the studio - supported digital video locker scheme that lets consumers buy movies once and access them pretty much any way they want — including through the new Nook HD tablets.

Skin lesions become worse when exposed to ultraviolet light, so keep affected dogs indoors as much as possible.

Depriving a cat of its hair coat will have many detrimental consequences including exposing delicate skin to harmful ultraviolet light, and making skin injury much more likely.

«Thick coats provide physical protection from the sun's rays, and dark coats absorb much of the damaging ultraviolet rays emitted by the sun.»

The shortwave extreme ultraviolet flux is much higher in the distant past, which could pose problems for early Mars to develop a very dense CO2 atmosphere early on for example, since C and O could escape from Mars early in its history (driven by these energetic wavelengths).

The solar luminosity is about 0.07 percent brighter during solar maximum than during solar minimum but observations from spacecraft in the 2000s showed that the ratio of ultraviolet to visible light is much more variable than previously thought.

In the stratosphere is it useful, as it blocks much of the ultraviolet radiation.