This is actually a light emitter.

And by night, artificial light in each one emanates and comes out to the outside.

(c) Photo neutron interrogation photo induced neutron emission occurs when the energy of an incoming photon (X ray or gamma ray) is above a certain threshold and atoms of low atomic weight undergo photonuclear reactions that emit neutrons.

8 Compute reflected, refracted, and transmitted rays

So this creates pulses of light that last a femtosecond.

The aim of the campaign was to study auroral pulsation, and it was a follow up of a similar campaign in 1980.

China, France and Israel have launched optical observation satellites.

Using a unique technique for concentrating the solar light, splitting the spectrum to various spectral bands, and using each band for direct optical pumping of different lasers near their emission band resulted in an overall efficiency of 20 per cent.

Female Voice Long range laser scanning by sending out a pulse that's a laser beam of light.

Tremendous fire.

At the Andøya Rocket Range, scientific rockets are launched and the international Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) facility uses light detection and ranging (lidars) to study the middle and upper atmosphere.

And when the sun shines, you get copious quantities of these things, called neutrinos, pouring out.

Light came out of it in every direction.

They were throwing those lights around.

Optical debris can be detected by reflected sunlight when the debris object is sunlit while the ground below is dark.

And I'm following all the light kicks on this thing and making sure that as I'm holding the light in the same position, I'm getting the same type of reflection on it that's the level of detail I'm going into this thing.

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

The eccentric pair were successfully launched in August 1995 and the two auroral satellites were also launched successfully in August 1996 by a Russian Molniya launcher.

Analyse X ray Fluorescence data

Flames dazzle and flash and lash at the rocks.

The sound that you're hearing are the actual emission spectrums of these atoms.

Optical identification studies for the newly discovered x ray objects will be carried out by NOOT.

It doesn't emit in the electromagnetic spectrum. It doesn't reflect.

So for direct light, it takes only one bounce, for off axis light it might take two, and for extreme off axis, it might take three.

The two astronomers used the joint German United States U.K. x ray satellite Roentgen Satellite (ROSAT), launched in June 1990, to observe an x ray bright elliptical galaxy, NGC 507, some 300 million light years from Earth.

And the phosphor is excited by the blue and makes the light white and warm and pleasant.

These had the aim of studying auroral pulsation and making ozone measurements.

Also, the atmosphere has a brightness all of its own, owing in part to scattering of electromagnetic radiation from various sources (such as city lighting, Moon light, auroral type phenomena and lightning).

Find the energy of X ray spectral lines

The sun shines through the tri color clouds, shooting towards the earth.

We are trying to shoot lasers into the brain.

XMM (X ray Multi Mirror) for X ray spectroscopy of cosmic objects

That's not luminescence, that's reflected light from the gonads.

And when we made a solution of this, tagged with the fluorescence and injected in the body of a mouse, their nerves literally glowed.

It uses X rays, X ray beams, that are rotating very fast around the human body.

The sun was shining, yet it was cold.

Bright have already shot the city head of ancient Rome

Bright have already shot the head of ancient Rome

Where saints in glory stand

It makes a shambles of the light.

Launched in April 1996, it has made an important contribution toward solving one of astronomy s greatest enigmas by detecting for the first time X ray emission from the source producing a gamma ray burst, thus allowing astronomers worldwide to watch the fading visible light counterpart of the gamma ray burst.

Under the Interball international project, the Prognoz M2 N2 (Auroral Probe) was launched on 29 August 1996.

He would shoot his light saber across the abyss, making a blade of light, and then scamper across on this blade of light.

Rockets launched from the Andøya Rocket Range are well suited to study these phenomena, as Andøya lies under the middle of the magnetic belt around the North Pole where auroral activity peaks.

The x ray absorption spectroscopist's periodic table