Venezuelans are sharing photos of their purple stained fingers after voting on today's presidential election.

All the wavelengths in the Lyman series are in the ultraviolet band.

Some of us with lightly pigmented skin live in high UV areas.

Some of us with darkly pigmented skin live in low UV areas.

These polarization detectors are sensitive in the ultraviolet region of the light spectrum.

Metal ion lasers are gas lasers that generate deep ultraviolet wavelengths.

They were studied with optical imaging, and through observations of occultations in ultraviolet and visible light.

National reports on existing and planned activities relating to ozone research and the monitoring, calibration and archiving of measurements and UV B monitoring and initiatives aimed at the prevention of UV B and sun related injuries.

In those early days of our evolution, looking at the equator, we were bombarded by high levels of ultraviolet radiation.

The early universe Study better than ever before how concentrations of visible and ultraviolet light change over time.

The new invention enabled the development of small, convenient and low priced blue, violet, and ultraviolet UV lasers, which had not been available before, and opened the way for applications such as high density HD DVD data storage and Blu ray discs.

So if we're somewhere in the Northern Hemisphere, look at what's happening to the ultraviolet radiation.

The plastic must then be cured with gas, heat, or ultraviolet light, in order to harden it.

Ultraviolet light may also be used to search body surfaces for any evidence not easily visible to the naked eye.

(The ozone is produced when UVC hits oxygen (O2) molecules, and so is only produced when oxygen is present.

Ozone distribution is derived from the change in the ratio of the same UV pair frequencies with time as the sun sets.

Cyclo olefins are now being used to provide microplates which transmit ultraviolet light for use in newly developed assays.

And the good thing about perceiving ultraviolet is that you can hear if it's a good day or a bad day to sunbathe, because ultraviolet is a dangerous color, a color that can actually kill us, so I think we should all have this wish to perceive things that we cannot perceive.

What's very, very important here is that the earliest humans evolved in high UV environments, in equatorial Africa.

The interaction of this plasma with the electrodes generates ultraviolet photons, which then excite the phosphor coating on the front of the display.

The ozone layer plays an important role in depleting the amount of ultraviolet (UV) radiation that reaches the surface.

It is most often a result of exposure to ultraviolet (UV) radiation from the sun or from artificial sources, such as a tanning bed.

Because the problem there is just as severe, but it is more sinister, because vitamin D deficiency, from a lack of ultraviolet B radiation, is a major problem.

The color is believed to be due to a set of blue and near ultraviolet emission lines from neutral and ionized molecular nitrogen.

The ozone layer, which absorbs ultraviolet energy from the Sun, is located primarily in the stratosphere, at altitudes of 15 to 35 km.

Ozone is tri atomic oxygen, O3 ozone molecules absorb harmful UV light in the atmosphere before it reaches the surface of the earth.

The World Meteorological Organization's Global Atmosphere Watch monitoring programme global ozone and UV B radiation observing and monitoring system.

And then I put some ultraviolet filters on my camera and took a very, very long exposure with the particular frequencies of ultraviolet light and this is what I got.

The presence of this compound in human skin enables humans to manufacture vitamin D3 from ultraviolet rays in the sun light, via an intermediate isomer pre vitamin D3.

The telescope is designed to take correlated images in a range of wavelengths from visible light, through the Lyman alpha line to far ultraviolet.

And what Darwin could not appreciate, or didn't perhaps want to appreciate at the time, is that there was a fundamental relationship between the intensity of ultraviolet radiation and skin pigmentation.

Between 1520 and 1867, 12 million, 500 people were moved from high UV to low UV areas in the transatlantic slave trade.

It is thought that Venus and Mars may have both lost much of their water when, after being photo dissociated into hydrogen and oxygen by solar ultraviolet, the hydrogen escaped.

So I decided to continue extending my color senses, and I added infrared and I added ultraviolet to the color to sound scale, so now I can hear colors that the human eye cannot perceive.

Sunlight is not rich in ultra violet rays, as these have been absorbed by the atmosphere, and it does not produce nearly so large an effect as the arc light.

Ozone in the Earth's stratosphere is created by ultraviolet light striking oxygen molecules containing two oxygen atoms (O2), splitting them into individual oxygen atoms (atomic oxygen).

In the eye, certain other carotenoids (lutein, astaxanthin, and zeaxanthin) apparently act directly to absorb damaging blue and near ultraviolet light, in order to protect the macula of the retina, the part of the eye with the sharpest vision.

So, living at the equator, we got lots and lots of ultraviolet radiation and the melanin this wonderful, complex, ancient polymer compound in our skin served as a superb natural sunscreen.

Many substances besides metals discharge negative electricity under the action of ultraviolet light lists of these substances will be found in papers by G. C. Schmidt and O. Knoblauch.

Ultraviolet light Although the concentration of the ozone in the ozone layer is very small, it is vitally important to life because it absorbs biologically harmful ultraviolet (UV) radiation coming from the sun.

Ratna Raman at Ultra Violet describes how many women in India are subject to some form of punishment, torture or cruelty in their lives beginning with getting rid of the female fetus from mother's womb.

Where it protected the body against the degradations of ultraviolet radiation, the destruction, or damage to DNA, and the breakdown of a very important molecule called folate, which helps to fuel cell production, and reproduction in the body.

The sieved or unsieved preparations may be examined using strew mounts on microscope slides that may be examined using a transmitted light biological microscope or ultraviolet (UV) fluorescence microscope.

Twenty years ago, the ultraviolet g line (436 nm) of the mercury spectrum was used to create lines in the 750 nm range in steppers that employed mercury lamps as their illumination source.

The heating of the stratosphere is caused by absorption of solar UV and IR radiation by methane and other hydrocarbons, which form in this part of the atmosphere as a result of methane photolysis.