"Ultraviolet" refers to a type of light or radiation that cannot be seen by the human eye. It is a form of energy that comes from the sun and is located beyond the range of violet light in the electromagnetic spectrum.
Ultraviolet light is known for its ability to cause sunburns and can also be used for various applications, such as sterilization or the creation of fluorescent colors.
Full definition
Its importance is that ozone acts as a filter for certain wavelengths of
ultraviolet light which can be harmful for life on earth.
Without the use of a black light, the extent of the disease could go unnoticed and worsen over time with
ultraviolet ray exposure or laser therapy.
Under a microscope illuminated
with ultraviolet light, the layers come into focus.
This consequence would follow from the increase
in ultraviolet radiation allowed to penetrate through the upper atmosphere.
Take our quiz to see if you know how to protect your baby's tender skin from
harmful ultraviolet rays.
This glue can be cured
using ultraviolet light in five seconds flat — very handy if you're operating on a living heart in flowing blood.
Scientists are using this extended comb to study the fine structure of atoms and molecules with
extreme ultraviolet laser light.
He used compounds that change
under ultraviolet light, such as the light from the sun.
Watching the sun in
ultraviolet wavelengths of light from space — above our UV light - blocking atmosphere — reveals constant activity, including bursts of light, particles, and magnetic fields.
These ions result from the removal of electrons from atmospheric gases by
solar ultraviolet radiation.
In humans, these cells function to protect skin from damaging environmental stresses such
as ultraviolet radiation exposure.
Since the ozone layer
absorbs ultraviolet light from the sun, ozone layer depletion can lead to increased rates skin cancer, eye damage and other adverse consequences.
Other potential environmental triggers
include ultraviolet light, certain drugs, infections, exhaustion, and mental or physical stress or trauma.
Without a protective layer of ozone, life would be exposed to DNA -
damaging ultraviolet rays from the sun.
An additional advantage is that LEDs don't
emit ultraviolet light, so they don't attract bugs.
At some point in my youth, sports trading card companies made a big deal of telling everyone that they'd added
ultraviolet protection to the surface of the cards.
Natural cosmic rays came through the ceiling, and
ultraviolet lamps played the part of the sun.
When the sun is at its most intense, ozone in the stratosphere absorbs
more ultraviolet energy, making areas near the equator warmer than usual.
The humidity can be as low as 10 %, there are
intense ultraviolet rays from the sun, and the high altitude can leave people short of breath.
In this upper atmosphere, ozone is made
when ultraviolet light from the sun splits an oxygen molecule (O2), forming two single oxygen atoms.
These allow them to differentiate between red and blue, and even see wavelengths that we can not, in the far red and
ultraviolet parts of the spectrum.
But if it has a self - cleaning coating you can make those organic molecules react away just by
shining ultraviolet light on the surface.
The UV index is a measurement of how
much ultraviolet radiation is reaching a particular place at a given time.
It will also keep
dangerous ultraviolet rays from cracking and fading the interior of your vehicle at the same time.
Not only do jumping spiders have eight eyes positioned to create nearly 360 - degree vision, but some species can
detect ultraviolet radiation, which facilitates mating.
They are electromagnetic waves like visible light but situated at the high energy / short wavelength end of the electromagnetic spectrum,
between ultraviolet light and gamma rays.
This condition is produced by the
strong ultraviolet light emitted from the very luminous, hot stars embedded in the gas.
For light with wavelengths that are shorter than those of visible light,
like ultraviolet rays, it is possible to use optical telescopes.
The windshield of your vehicle does not keep
harsh ultraviolet rays from reaching your skin.
Never place them immediately in full sun after they've grown in the low light of a fluorescent fixture or they will
get ultraviolet light damage and burn up.
Here, the high density of stars means that at any given time several could be exploding, frying off a planet's ozone layer and exposing any surface life to
deadly ultraviolet rays.
Some flowers bear
ultraviolet markings, invisible to the human eye, that attract the worker bee and tell her where to land to scoop up nectar or pollen.
Although ultraviolet light from stars would break apart water molecules, after hundreds of millions of years an equilibrium could be reached between water formation and destruction.
She is also well known as the inventor of the world's
first ultraviolet protection suit designed to protect children from the sun.
The
hot ultraviolet radiation heats the surrounding ice - cold dust, which then emits light in the far - infrared.
In addition, they must have been able to resist the biologically
destructive ultraviolet radiation in sunlight, which was not absorbed by a layer of ozone as it is now.
The main risk factor for melanoma, as for all skin cancer, is exposure to natural and
artificial ultraviolet (UV) light.
Phrases with «ultraviolet»