Science / Chemistry / Plancks Constant: A proportionality constant that relates the energy carried by a photon to its frequency. Planck's constant has a value of 6.6262 ?— 10-34 J s.
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Technology / Radar / Fast Time Constant (FTC) Circuit: An electronic circuit designed to reduce the undesirable effects of clutter. With the ftc circuit in operation, only the nearer edge of an echo having a long time duration is displayed on the radarsco MORE
Science / Tides and Currents / Harmonic Constants: The amplitudes and epochs of the harmonic constituents of the tide or tidal current at any place. MORE
Technology / Radar / Fast Time Constant (FTC): With ftc in operation, only the leading edge of an echo of a long-time duration is displayed on the radarscope. Ftc tends to reduce saturation of the scope by clutter. Also called anti-clutter or diff MORE
Science / Chemistry / Equilibrium Constant: The product of the concentrations of the products, divided by the product of the concentrations of the reactants, for a chemical reaction at equilibrium. For example, the equilibrium constant for A + MORE
Technology / Aviation / Constant-Speed Propeller: A hydraulically-controlled propeller that governs an engine at its optimum speed by the blade pitch being increased or decreased automatically. MORE
Science / Tides and Currents / Current Constants: Tidal current relations that re-main practically constant for any particular locality. Current constants are classified as harmonic and non-harmonic. The harmonic constants consist of the am plitudes MORE