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candlepower

Overview page. Subjects: Physics — Psychology.

A unit of luminous intensity, now replaced by the candela.

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chromaticity

Overview page. Subjects: Physics — Psychology.

The quality of colour or light in terms of the purity of its dominant wavelength, involving both hue and saturation (1). The chromaticity coordinates of a colour are the three tristimulus...

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functional

Overview page. Subjects: Psychology — Physics.

In relation to a disorder, referring to changes in behaviour or action, without any observable change in physical structure in the person or any organ or body part.

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lambert

Overview page. Subjects: Psychology — Physics.

A unit of light intensity or illumination, equal to one lumen per square centimetre. millilambert n. 1/1,000 of a lambert. [Named after the German mathematician and physicist Johann H....

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Lissajous figure

Overview page. Subjects: Psychology — Physics.

A curve traced out by a point moving in simple harmonic motion in two directions perpendicular to each other, the shape of the curve being determined by the relative frequencies and phases...

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principle of least effort

Overview page. Subjects: Psychology — Physics.

The proposition that, in striving for a goal, an organism generally seeks a method involving the minimum expenditure of energy. The concept was named in 1954 by the US psychologist Gordon...

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