Barry Barish

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.

American Physicist

Michael Dickinson

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.

American Scientist

Simon Singh

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.

British Author

John M. Grunsfeld

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.

American Astronaut

Nancy Roman

The first year I was at NASA, I was only responsible for optical and ultraviolet astronomy. Frankly, there wasn't much else.

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

Invisible Light

Ultraviolet light is a reason to use sunscreen, as it protects skin from its harmful impact.

Sun Protection

Beyond sunburn, ultraviolet exposure can contribute to skin aging and eye damage.

Health Relevance

 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,

Why is glass transparent?...

 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,

How quantum mechanics...

 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,

Can we create new senses...

 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,

Is radiation dangerous?...

 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.

How do we study the...

 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

Electromagnetism 101 PIPE...

 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

How electromagnetic...

 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

Budgie Courtship Ritual...

 food for the coral but too much ultraviolet light can damage them so the corals protect themselves a special protein absorbs the

What's Hiding in the...

 light can damage them so the corals protect themselves special protein absorbs the ultraviolet light and