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Ultraviolet in sentence

69 examples of Ultraviolet in a sentence

When ultraviolet sunlight hits our skin, it affects each of us a little differently.
Other orchids have evolved contrasting colours and ultraviolet spots– invisible to humans but irresistible to insects.
Well, here's one idea: one of our weaknesses as humans is that we can't see ultraviolet, or UV, light.
My research is currently looking at ways of doing this through a series of UV, or ultraviolet, pretreatments, which basically means we blast PET plastic with sunlight.
And a couple of years after that, they'll be able to see in ultraviolet, they'll be able to see in infrared, they'll be able to focus their eyes, they'll be able to come into a microfocus.
And that's with ultraviolet light.
I think you all know what ultraviolet light is.
It's part of a spectrum that includes infrared, it includes visible light, and the short-wavelength part of this group is ultraviolet light.
The key thing from our perspective here is that ultraviolet light kills bacteria by a completely different mechanism from the way drugs kill bacteria.
So ultraviolet light is just as capable of killing a drug-resistant bacteria as any other bacteria, and because ultraviolet light is so good at killing all bugs, it's actually used a lot these days to sterilize rooms, sterilize working surfaces.
What you see here is a surgical theater being sterilized with germicidal ultraviolet light.
So you can't use conventional, germicidal, ultraviolet light when there are people are around.
So the ideal ultraviolet light would actually be able to kill all bacteria, including superbugs, but would be safe for human exposure.
Together with my physics colleagues, we realized there actually is a particular wavelength of ultraviolet light that should kill all bacteria, but should be safe for human exposure.
That wavelength is called far-UVC light, and it's just the short-wavelength part of the ultraviolet spectrum.
Now we're going to see what happens when conventional, germicidal, ultraviolet light impinges on this.
But they vary even more, possibly moving towards infrared and ultraviolet in the extremes.
The TOMS 7 satellite data, shown here, show the annual average ultraviolet radiation at the Earth's surface.
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.
Let's first look at the relationship of ultraviolet radiation to the Earth's surface.
In those early days of our evolution, looking at the equator, we were bombarded by high levels of ultraviolet radiation.
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.
Conditions were significantly colder, but they were also less intense with respect to the ultraviolet regime.
So if we're somewhere in the Northern Hemisphere, look at what's happening to the ultraviolet radiation.
In the winter, when you are skiing in the Alps, you may experience ultraviolet radiation.
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.
Specifically, we now know that the sun's ultraviolet radiation is the primary cause of most skin cancers.
For over fifty years, ultraviolet radiation from the sun has been the number one suspected cause of skin cancer.
Epidemiologic data from Australia, animal studies with artificial sources of ultraviolet light, and the development of skin cancer in individuals with a genetic inability to correct the DNA damage caused by ultraviolet radiation provided circumstantial evidence of the connection.
Moreover, in educating the public we confront formidable forces: cultural icons who are as bronze as the statuary in the Louvre, the sheer pleasure of being in the sun, and the perceived incremental health benefits of ultraviolet radiation.
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