ballast : | |||||||||||||
any heavy material used to stabilize a ship or airship an electrical device for starting and regulating fluorescent and discharge lamps an attribute that tends to give stability in character and morals; something that steadies the mind or feelings coarse gravel laid to form a bed for streets and railroads make steady with a ballast The power supply to activate and regulate voltage in an ultraviolet (UV) lamp. a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations) |
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