Hypertext Webster Gateway: "intensity"

From Webster's Revised Unabridged Dictionary (1913) (web1913)

Intensity \In*ten"si*ty\, n. [LL. intensitas: cf. F.
intensit['e]. See {Intense}.]
1. The state or quality of being intense; intenseness;
extreme degree; as, intensity of heat, cold, mental
application, passion, etc.

If you would deepen the intensity of light, you must
be content to bring into deeper blackness and more
distinct and definite outline the shade that
accompanies it. --F. W. Robertson.

2. (Physics) The amount or degree of energy with which a
force operates or a cause acts; effectiveness, as
estimated by results produced.

3. (Mech.) The magnitude of a distributed force, as pressure,
stress, weight, etc., per unit of surface, or of volume,
as the case may be; as, the measure of the intensity of a
total stress of forty pounds which is distributed
uniformly over a surface of four square inches area is ten
pounds per square inch.

4. (Photog.) The degree or depth of shade in a picture.

From WordNet (r) 1.7 (wn)

n 1: the amount of energy transmitted (as by acoustic or
electromagnetic radiation); "he adjusted the intensity
of the sound"; "they measured the station's signal
strength" [syn: {strength}, {intensity level}]
2: high level or degree; the property of being intense [syn: {intensiveness}]
3: the magnitude of sound (usually in a specified direction);
"the kids played their music at full volume" [syn: {volume},
{loudness}] [ant: {softness}]
4: chromatic purity: freedom from dilution with white and hence
vividness of hue [syn: {saturation}, {chroma}, {vividness}]

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