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Medicine and Health x Astronomy and Astrophysics x clear all

bends

Overview page. Subjects: Public Health and Epidemiology — Astronomy and Astrophysics.

Syn: barotrauma. So named by those exposed to this occupational risk of working for long periods under increased atmospheric pressure because if the pressure is reduced too rapidly, gases,...

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biconvex

Overview page. Subjects: Medicine and Health — Astronomy and Astrophysics.

adj. having a surface on each side that curves outwards. Biconvex lenses are used to correct long-sightedness. Compare biconcave.

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collimation

Overview page. Subjects: Astronomy and Astrophysics — Dentistry.

The elimination of divergent x-rays by using a metal tube, cone, or diaphragm (collimator) to produce a narrow beam directed specifically at the radiograph. Collimation gives the final...

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deferent

Overview page. Subjects: Astronomy and Astrophysics — Medicine and Health.

adj. 1. carrying away from or down from. 2. relating to the vas deferens.

1. carrying away from or down from. 2. relating to the vas deferens.

null...

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distance

Overview page. Subjects: Astronomy and Astrophysics — Sports and Exercise Medicine.

A scalar measurement of the extent of a body's motion, irrespective of the direction in which it has travelled. Thus, when a body moves from one location to another, the distance through...

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drag

Overview page. Subjects: Sports and Exercise Medicine — Astronomy and Astrophysics.

The braking effect of friction, imparted by a fluid on bodies passing through it.

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focus

Overview page. Subjects: Astronomy and Astrophysics — Medicine and Health.

1. n. the point at which rays of light converge after passing through a lens. 2. n. the principal site of an infection or other disease. 3. null...

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microgravity

Overview page. Subjects: Astronomy and Astrophysics — Sports and Exercise Medicine.

The very weak gravitational force that occurs on board a spacecraft in orbit round the earth.

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offgassing

Overview page. Subjects: Astronomy and Astrophysics — Public Health and Epidemiology.

The phenomenon observed when pressure is reduced on a liquid or solid substance in which gases are dissolved or absorbed, releasing the gas into the environment. When the gas is toxic,...

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revolution

Overview page. Subjects: Astronomy and Astrophysics — Sports and Exercise Medicine.

One complete turn or cycle of a periodic motion. For example a car engine may operate most efficiently at 3500 revs/min (revolutions per minute).

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