Ultraviolet
adjective
Type of light that is not visible to the human eye but can cause sunburn.
Prolonged exposure to ultraviolet light can damage the skin.

Often appears as...
- ultraviolet light
- ultraviolet radiation
adjective
Type of light that is not visible to the human eye but can cause sunburn.
Prolonged exposure to ultraviolet light can damage the skin.

Often appears as...
- ultraviolet light
- ultraviolet radiation
Definition 1 of 1

Invisible Light
Ultraviolet is light beyond the visible spectrum; it's unseen but has effects like sunburn.

Despite the cloudy day, ultraviolet rays can still cause sunburn.
Sun Protection
Ultraviolet light is a reason to use sunscreen, as it protects skin from its harmful impact.

Apply a high SPF sunscreen to shield against ultraviolet radiation.
Health Relevance
Beyond sunburn, ultraviolet exposure can contribute to skin aging and eye damage.

Sunglasses with ultraviolet protection can help prevent cataracts.
Invisible Light
Ultraviolet is light beyond the visible spectrum; it's unseen but has effects like sunburn.

Despite the cloudy day, ultraviolet rays can still cause sunburn.
Sun Protection
Ultraviolet light is a reason to use sunscreen, as it protects skin from its harmful impact.

Apply a high SPF sunscreen to shield against ultraviolet radiation.
Health Relevance
Beyond sunburn, ultraviolet exposure can contribute to skin aging and eye damage.

Sunglasses with ultraviolet protection can help prevent cataracts.
Invisible Light
Ultraviolet is light beyond the visible spectrum; it's unseen but has effects like sunburn.

Despite the cloudy day, ultraviolet rays can still cause sunburn.
Sun Protection
Ultraviolet light is a reason to use sunscreen, as it protects skin from its harmful impact.

Apply a high SPF sunscreen to shield against ultraviolet radiation.
Health Relevance
Beyond sunburn, ultraviolet exposure can contribute to skin aging and eye damage.

Sunglasses with ultraviolet protection can help prevent cataracts.
Video examples
Why is glass transparent?...
Otherwise, it will just let the photon pass by, and it just so happens that in glass, the rows are so far apart that a photon of visible light can't provide enough energy for an electron to jump between them. Photons from ultraviolet light, on the other hand, give just the right amount of energy,
Video examples
How quantum mechanics...
of electromagnetic radiation, which includes radio waves, microwaves, infrared, ultraviolet, x-rays, and gamma rays. It may seem strange to think of these things as light, but there is no fundamental difference between visible light and other electromagnetic radiation. It's the same energy,
Video examples
Can we create new senses...
Now, it's not that these things are inherently unseeable. Snakes include some infrared in their reality, and honeybees include ultraviolet in their view of the world, and of course we build machines in the dashboards of our cars to pick up on signals in the radio frequency range,
Video examples
Is radiation dangerous?...
infrared, and visible light. At the higher end are ultraviolet, X-ray, and gamma rays. Modern society is shaped by sending and detecting electromagnetic radiation. We might download an email to our phone via radio waves to open an image of an X-ray print,
Video examples
How do we study the...
and the ultraviolet light from the hot stars recently born from those clouds. Studying different wavelengths not only gives us a more complete picture of any single object but also different views of the universe.
Video examples
Electromagnetism 101 PIPE...
and infrared waves emitted by fires. On the other are short, high-frequency ultraviolet, X, and gamma radiation. Unlike low-frequency waves, these waves can pass through the human body making them useful
Video examples
How electromagnetic...
radio waves microwaves ultraviolet infrared visible light these are all things that make up the electromagnetic spectrum whether you're sitting at home walking down the street on a bus in a
Video examples
Budgie Courtship Ritual...
too occupied in preening to care but her admirer has ways to get himself noticed she sees more subtleties of color than we can and she detects ultraviolet to a
Video examples
What's Hiding in the...
food for the coral but too much ultraviolet light can damage them so the corals protect themselves a special protein absorbs the
Video examples
Best Of Oceans PIPE BBC...
light can damage them so the corals protect themselves special protein absorbs the ultraviolet light and
Video examples
Why is glass transparent?...
Otherwise, it will just let the photon pass by, and it just so happens that in glass, the rows are so far apart that a photon of visible light can't provide enough energy for an electron to jump between them. Photons from ultraviolet light, on the other hand, give just the right amount of energy,
Video examples
How quantum mechanics...
of electromagnetic radiation, which includes radio waves, microwaves, infrared, ultraviolet, x-rays, and gamma rays. It may seem strange to think of these things as light, but there is no fundamental difference between visible light and other electromagnetic radiation. It's the same energy,
Video examples
Can we create new senses...
Now, it's not that these things are inherently unseeable. Snakes include some infrared in their reality, and honeybees include ultraviolet in their view of the world, and of course we build machines in the dashboards of our cars to pick up on signals in the radio frequency range,
Video examples
Is radiation dangerous?...
infrared, and visible light. At the higher end are ultraviolet, X-ray, and gamma rays. Modern society is shaped by sending and detecting electromagnetic radiation. We might download an email to our phone via radio waves to open an image of an X-ray print,
Video examples
How do we study the...
and the ultraviolet light from the hot stars recently born from those clouds. Studying different wavelengths not only gives us a more complete picture of any single object but also different views of the universe.
Video examples
Electromagnetism 101 PIPE...
and infrared waves emitted by fires. On the other are short, high-frequency ultraviolet, X, and gamma radiation. Unlike low-frequency waves, these waves can pass through the human body making them useful
Video examples
How electromagnetic...
radio waves microwaves ultraviolet infrared visible light these are all things that make up the electromagnetic spectrum whether you're sitting at home walking down the street on a bus in a
Video examples
Budgie Courtship Ritual...
too occupied in preening to care but her admirer has ways to get himself noticed she sees more subtleties of color than we can and she detects ultraviolet to a
Video examples
What's Hiding in the...
food for the coral but too much ultraviolet light can damage them so the corals protect themselves a special protein absorbs the
Video examples
Best Of Oceans PIPE BBC...
light can damage them so the corals protect themselves special protein absorbs the ultraviolet light and
Example 1 of 10
Quote examples
Barry Barish
American Physicist
Everything we know about the universe is studied by using telescopes or other instruments that look at visible light, infrared, ultraviolet or X-ray - different wavelengths of electromagnetic interactions. Only 4 percent of what's in the universe gives off electromagnetic radiation, so we don't have any handle on the rest.

Quote examples
Michael Dickinson
American Scientist
Like many insects, flies are most sensitive to green light. This means that they would see their world as 'black and white,' in that they can't see the multiple colors required to reconstruct a color image of the world. They do, however, have specialized cells that enable them to see ultraviolet wavelengths.

Quote examples
Simon Singh
British Author
Sunspots are hubs of intense magnetic activity and they trigger solar flares that launch charged particles, X-rays, ultraviolet radiation and radio waves at the Earth.

Quote examples
John M. Grunsfeld
American Astronaut
The surface of Mars is bathed in ultraviolet light, bathed in radiation. Mars's magnetic field is essentially gone, so the surface of Mars is essentially sterilized.

Quote examples
Nancy Roman
American Scientist
The first year I was at NASA, I was only responsible for optical and ultraviolet astronomy. Frankly, there wasn't much else.

Quote examples
Barry Barish
American Physicist
Everything we know about the universe is studied by using telescopes or other instruments that look at visible light, infrared, ultraviolet or X-ray - different wavelengths of electromagnetic interactions. Only 4 percent of what's in the universe gives off electromagnetic radiation, so we don't have any handle on the rest.

Quote examples
Michael Dickinson
American Scientist
Like many insects, flies are most sensitive to green light. This means that they would see their world as 'black and white,' in that they can't see the multiple colors required to reconstruct a color image of the world. They do, however, have specialized cells that enable them to see ultraviolet wavelengths.

Quote examples
Simon Singh
British Author
Sunspots are hubs of intense magnetic activity and they trigger solar flares that launch charged particles, X-rays, ultraviolet radiation and radio waves at the Earth.

Quote examples
John M. Grunsfeld
American Astronaut
The surface of Mars is bathed in ultraviolet light, bathed in radiation. Mars's magnetic field is essentially gone, so the surface of Mars is essentially sterilized.

Quote examples
Nancy Roman
American Scientist
The first year I was at NASA, I was only responsible for optical and ultraviolet astronomy. Frankly, there wasn't much else.

Example 1 of 5
WordUp Chrome Extension
As you browse the web instantly look up words you don’t know.
Get Chrome Extension