They usually have about a one degree acceptance angle, meaning once they're more than about a degree off, none of the sunlight rays will hit the focus.

This equipment uses two types of rays x rays and gamma rays to detect objects such as weapons, bombs and other explosives, and drugs.

Suddenly, I saw a world that I had never seen before in the ocean schools of fish that were so dense they dulled the penetration of sunlight from the surface, coral reefs that were continuous and solid and colorful, large fish everywhere, manta rays.

But the potential advantage was that gamma rays, unlike X rays, are not influenced by breast density.

Do I need X rays?

Such equipment, which will be supplied to all remaining border posts in the near future, employs two kinds of rays, namely X rays and gamma rays, and seeks such contraband items as arms, bombs, explosives and narcotic drugs.

Ultraviolet rays can cause skin cancer.

We were using it at lunch today in the sunlight, and the more sunlight the better.

Now, sunlight, of course, comes into this.

Come and enjoy the sunlight.

It has parallel lines, which are sun rays.

X rays, useful when you go to hospitals.

Dentists take x rays to examine your teeth.

And then, when you shine sunlight at them, the sunlight will be reflected back, just as it is in the eyes of an animal.

Now that we have concentrated sunlight, what are we going to put at the center to convert sunlight to electricity?

When the sunlight is rolled up.

When the sunlight is rolled up.

The doctor used X rays to examine my stomach.

Dual mode display that sunlight display's fantastic.

We think we can also personalize sunlight.

The icy road sparkled in the sunlight.

So this seems to be a feature of ultraviolet rays hitting the skin.

Here's a design for distilling water using sunlight.

You've been seasoned by wind, dusk and sunlight.

Within this band are gamma ray pulsars and other unidentified sources of gamma rays.

Are there any other rays of light that could make it into the eye?

High vitamin D levels, I think, are a marker for sunlight exposure, and sunlight exposure, in methods I'm going to show, is good for heart disease.

Sunlight was cut off, and fungi inherited the Earth.

So they can collect sunlight from a big area.

Monitors won't give you Vitamin D but sunlight will...

Skin shouldn't be exposed to sunlight for too long.

You look at your X rays on a screen and you do stuff with them, you email them. But we were still using X rays, but we didn't even have a viewing box!

It collects about four and a half average hours of sunlight a day.

You don't want to get close to gamma rays, it could be dangerous.

Because black particles contain soot and absorb sunlight, they are believed to increase global warming. White particles, however, reflect some of the incoming sunlight back into space, producing a cooling effect on Earth s climate.

And there is 10 thousand times more sunlight than we need.

We're trying to modify photosynthesis to produce hydrogen directly from sunlight.

They take all the parallel incoming rays and focus it to a single spot.

So let's look at this in the context of the entire electromagnetic spectrum, where we have gamma rays.

When the sunlight comes through the window you see these little fibers.

Luminosity was an issue, when you have too much bright sunlight outside.

Yes! The rays would lie on a I'd like to see yeah, on a cone.

But isotopes, particles of electricity, antimatter, neutrinos, the conversion of mass to energy that's E mc 2 gamma rays, transmutation.

You can see that there is a scattering of X rays on the teeth, the metal in the teeth.

But let's say you have sunlight hitting some particle and it's unevenly heated.