exposure (redirected from entrance exposure)

exposure

(1) The degree to which information can be accessed using authorized or unauthorized methods. See penetration test and risk analysis.

(2) In a camera, the amount of light that reaches the film (analog) or CCD or CMOS sensor (digital). The exposure is achieved by the sum of the shutter speed, aperture (f-stop) and ISO setting. See shutter speed, f-stop and ISO speed.

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exposure

1. Archit the position or outlook of a house, building, etc.; aspect

2. Mountaineering the degree to which a climb, etc. is exposed (see exposed (sense 4))

3. Photog

a. the act of exposing a photographic film or plate to light, X-rays, etc.

b. an area on a film or plate that has been exposed to light, etc.

c. (as modifier): exposure control

4. Photog

a. the intensity of light falling on a photographic film or plate multiplied by the time for which it is exposed

b. a combination of lens aperture and shutter speed used in taking a photograph

5. See indecent exposure

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exposure [ik′spō·zhər]

(building construction)

The distance from the butt of one shingle to the butt of the shingle above it, or the amount of a shingle that is seen.

(graphic arts)

The act of permitting light to fall upon a photosensitive material.

(medicine)

The state of being open to some action or influence that may affect detrimentally, as cold, disease, or wetness.

(meteorology)

The general surroundings of a site, with special reference to its openness to winds and sunshine.

(nucleonics)

The total quantity of radiation at a given point, measured in air.

The cumulative amount of radiation exposure to which nuclear fuel has been subjected in a nuclear reactor; usually expressed in terms of the thermal energy produced by the reactor per ton of fuel initially present, as megawatt days per ton.

(optics)

light exposure radiant exposure