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Warfare and Defence x Physics x clear all

hypersonic

Overview page. Subjects: Physics — Warfare and Defence.

Denoting a velocity in excess of Mach 5 (see Mach number). Hypersonic flight is flight at hypersonic speeds in the earth's atmosphere. Hypersonics is the study of phenomena, including air...

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MANLEY, Brian William (1929 - 2014), Managing Partner, Manley Moon Associates, 1988–2001; President, Institute of Physics, 1996–98

in Who Was Who

P ublished online November 2015 .

Reference Entry. Subjects: History of Engineering and Technology; Transport; Transportation Systems; Social and Cultural History; Education; Organization and Management of Education; Military History; Warfare and Defence; Air Forces and Warfare; Engineering and Technology; History of Science and Technology; Physics. 254 words.

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megaton weapon

Overview page. Subjects: Warfare and Defence — Physics.

A nuclear weapon with an explosive power equivalent to one million tons of TNT. Compare kiloton weapon.

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periscope

Overview page. Subjects: Physics — Warfare and Defence.

An optical device that enables an observer to see over or around opaque objects. The simplest type consists of a long tube with mirrors at each end set at 45° to the direction to be viewed....

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pulsejet

Overview page. Subjects: Physics — Warfare and Defence.

A type of ramjet (see jet propulsion) in which a louvred valve at the front of the projectile is blown open by the ram effect of the moving projectile and remains open until pressure has...

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shielding

Overview page. Subjects: Physics — Warfare and Defence.

1. A barrier surrounding a region to exclude it from the influence of an energy field. For example, to protect a region from an electric field an earthed barrier is required;...

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thermal imagery

Overview page. Subjects: Physics — Warfare and Defence.

The production of images by detecting, measuring, and recording the thermal (infrared) radiation emitted by objects. Applications of thermal imaging include mapping of the surface of the...

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