Single crystals of BGO(Bi12GeO20), BSO(Bi12SiO20) and their solid solutions are wide band gap, high resistivity semi insulators that are also piezoelectric, photoconductive, acousto optic, magneto optic and optically active.

Gallium Arsenide (GaAs) is one of the important semiconductor materials for the production of optoelectronic devices, and is largely required by the computer, telecommunication and electronic industries.

The orbital network of the space communications, television transmission and navigation system comprises the Gorizont (communications and television), Ekspress (communications and television), Ekran M (television) and Nadezhda (navigation and rescue) spacecraft and the GLONASS system.

The cable over there, that's an optical fiber.

Flashlights. Luminous dials for watches.

A technician will put the electrodes onto the scalp using a conductive gel or paste and usually after a procedure of preparing the scalp by light abrasion.

The electromagnetic force interacts with electrically charged matter via particles called photons.

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).

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

You see the red glow in their eyes, which is the reflection of the flashlight.

79. Conductive polymers can change colour and conductivity in response to chemical and electronic stimuli.

Conductive ink has been used by artists, but recent developments indicate that we will soon be able to use it in laser printers and pens.

These materials may find future use as catalysts, superconductors, hydrogen storage materials or photovoltaics.

Light is converted to electricity on them.

Well, it conducts electricity.

Electric fields are not ionizing radiation, like X rays or proton beams, that bombard tissue to disrupt DNA.

And light is part of the electromagnetic spectrum.

We have a wonderful electric sign

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Solar cells collect light for four and a half hours though.

Severing any wire causes a power cut

So conductive ink allows us to paint circuits instead of using the traditional printed circuit boards or wires.

If you put electricity on them, they emit light.

There's massive P.V. arrays on the roofs as well as wind turbines.

In the area of renewable energy, the United States Department of Energy had undertaken extensive research in the areas of the production of energy through wind, solar thermal sources, photovoltaic cells, as well as research in lasers, and high temperature superconductivity.

There are 10 billion electrical outlets in North America alone.

Space Telecommunications and Navigation.

They showed the pictures on television.

Station WEDS brings you the latest in world news.

Here's a special announcement from the overseas service of the BBC.

A variety of other electro optic components such as waveguides, switches and modulators have been demonstrated and some may well find their way into small, inexpensive components of fibre optic communication and computing systems.

The auroral zone is the quot mission target quot and the satellite carries energetic particle detectors, magnetic and electric wave experiments, electric field sensors and a UV imager.

We needed to beat solar cells.

The system is composed of a Nd Yag laser, a light beam expander, a telescope, a CCD camera, a photo multiplier and a computer.

And it's technological, so it can do things like microelectronics, and maybe photonics do.

35. In the area of renewable energy, the United States Department of Energy had undertaken extensive research into the production of energy through wind, solar thermal sources and photovoltaic cells, as well as into lasers and high temperature superconductivity.

Wind takes about two to five years on average, same as concentrated solar and photovoltaics.

Radio observatories also need to avoid spurious emissions (interference from television and radio stations, radar installations and car ignitions).

Verily the lightning could snatch away their eyes. When it flashes forth they walk in its flare. When darkness returns they stand still. And if the Lord wills so He could take away their hearing and sight surely God is all powerful.

It seems the lightning may snatch away their sight from them whenever it flashes they walk in it, and when it darkens they stand still if Allah willed, He could take away their hearing and their sight indeed Allah is Able to do all things.

the lightning wellnigh snatches away their sight whensoever it gives them light, they walk in it, and when the darkness is over them, they halt had God willed, He would have taken away their hearing and their sight. Truly, God is powerful over everything.

The lightning well nigh snatcheth away their sight whensoever it flasheth on them, they walk therein, and when it becometh dark unto them, they stand still. And had Allah willed He would of a surety have taken away their hearing and their sights verily Allah is over everything potent.

The lightning almost snatches away their sight, whenever it flashes for them, they walk therein, and when darkness covers them, they stand still. And if Allah willed, He could have taken away their hearing and their sight. Certainly, Allah has power over all things.

The lightning almost snatches their sight away. Whenever it illuminates for them, they walk in it but when it grows dark over them, they stand still. Had God willed, He could have taken away their hearing and their sight. God is capable of everything.

The lightning terrifies them as if it were going to snatch away their eyesight from them. When they see light, they move on a little further and When it becomes dark for them, they stand still. Had Allah so willed, He could have deprived them totally of their hearing and their sight. Most surely Allah has power over everything.