What is "photocell"

Usage examples of "photocell".

Ken followed the suggestion, testing first the sound apparatus and then the various recorders and other instruments in the cargo chamber which were intended to tell whether or not any violent chemical reactions took place photocells and pyrometers, and gas pumps connected to sample flasks and precipitators.

In these cases, the IMP program would be reloaded from a paper tape reader, a kludgy electro-mechanical device which shone light from an incandescent bulb through a paper tape that was pulled across a line of photocells.

A great round bug of whirring metal and relays, clicking photocells and tubes.

His head was molded to the human model, and he had glowing photocells for eyes.

As a photocell activated all the streetlamps simultaneously, he strolled along Ocean Avenue, looking in shop windows, getting a feel for the town.

A last reading with the photocell gave me the apparent magnitude and a comparison with its absolute magnitude showed its distance.

In Dean's experiments, participant receivers lay quietly on a cot in a darkened room, while an optical plethysmograph with a small light bulb and a photocell recorded changes in their fingers' blood volume, which is a measure of autonomic nervous system activity.

Our supply of glass is running low, and we need quartz glass for the photocells.