Examlex
To prevent anode movement under the stress of subsecond acceleration, new x-ray tubes have the anode mounted on a shaft that extends along the tube.
Internal Resistance
The resistance inherent to a power source.
Cell
The basic structural, functional, and biological unit of all living organisms, or a device that converts chemical energy into electrical energy in a battery.
Specific Gravity
A dimensionless number that describes the ratio of the density of a substance to the density of a reference substance, typically water at 4 °C.
Acid
A chemical substance that donates protons or accepts electrons and has a sour taste.
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