The face value of currency, coins, and stocks and.

An instrument used to measure and record earthquake vibrations and other earth tremors.

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An opening in a ship's side, provided with a glazed lid or cover for the admission of light.

A device where sunlight concentrated onto a absorber heats it to a high temperature, and the thermal radiation emitted by the absorber is used as the energy source for a photovoltaic cell that is designed to maximize conversion efficiency at the wavelengt ...

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The drying of compressed gases other than air. Equipment size, choice of materials and other specifications may be decidedly different for drying gases other than air because of the specific properties of the gases. Properties include specific gravity, sp ...

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See auxiliary electrode.

A ratio used to work out how many days on average it takes a company to get paid for what it.

A reaction in which there is a decrease in valence resulting from a gain in electrons. Contrast with oxidation.

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The addition of dopants to a semiconductor.

All the components of the appliance used to condition interior air of a building.

The operation of bringing two lines together; term also applied to other objects.

A measure of the amount of light incident on a surface; measured in foot-candles or Lux.

The energy in foot pounds required to compress polytropically and to transfer one pound of a given gas from one pressure level to another.

An idealized process in which a working fluid (water, air, ammonia, etc) successively changes its state (from a liquid to a gas and back to a liquid) for the purpose of producing useful work or energy, or transferring energy.

The distance the bow of a boat is forward of another's stern

To turn the boat head-to-wind so as to go about on the opposite tack