photochemical

When the laser is turned on it causes a photochemical change in the media.

This change is generally a photochemical reaction of some sort, although other possibilities exist.

In case of photochemical reactions light provides the activation energy.

Photochemical compounds aren't what I came down here to find."

Over the last century and earlier an immense number of photochemical reactions have been uncovered.

Be aware that this photochemical reaction is the basis of photographic film and paper.

So why is the airborne photochemical smog visible, at almost all times?

A species may be created chemically before deposition, or after by photochemical means.

The higher temperatures also speed up the photochemical reactions that form ozone, the study says.

A. Ozone is the kind of generic name we give for photochemical smog in the summer.

Moreover, they offer a wider range of colors and photochemical properties.

The photochemical processes involved are complex but well understood.

It is a reaction intermediate of photochemical reactions in atmosphere.

And could, if levels get high enough, descend on us as choking, photochemical smog.

This low quantum yield means that other photochemical processes are occurring.

Photochemical smog is therefore considered to be a problem of modern industrialization.

I speculated on photochemical effects that would have created the luminescent quality.

"There may be a photochemical reaction in the Orb's atmosphere.

"Well, those are the conversion units which will collect the sun's energy and change it into electricity by photochemical action."

It only results from an electrochemical or photochemical reaction.

In 1970, 40 high school students were exposed to photochemical smog and required hospitalization.

He is particularly noted for early work on vanadium and for photochemical studies.

Above the clouds lie several tenuous layers of photochemical haze.

"Melvin's work was the cause of this agency's starting its solar photochemical energy conversion research," he said.

The light's wavelengths must be correctly matched to the ink's photochemical properties.