View:

Overview

Perpendicular

Denoting the latest stage of English Gothic church architecture, prevalent from the late 14th to mid 16th centuries and characterized by broad arches, elaborate fan vaulting, and large ...

sound intensity

sound intensity   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...intensity Symbol: L or J A physical quantity, the *sound power (unidirectional) through an area perpendicular to the direction of propagation divided by the area. The *SI unit is the watt per square...

proper motion

proper motion   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...motion Symbol: μ (Greek mu) The apparent angular motion of a star, perpendicular to the line of sight, in a year. It is measured in arc seconds per...

ortho-

ortho-   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

... ( orth- before vowels) Prefix denoting 1 straight, correct, or upright (e.g. orthostatic, orthostichy, orthotropism). 2 perpendicular or perpendiculars (e.g. orthocentre, orthogonal, orthorhombic). 3 the most highly hydrated form of an oxo acid (e.g. orthophosphoric acid). The use of oxidation numbers is now recommended (e.g. orthophosphoric acid is phosphoric( v ) acid). 4 a diatomic molecule in which both nuclei have parallel spins (e.g. orthodeuterium,...

surface tension

surface tension   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...tension Symbol: σ or γ (Greek sigma, gamma) A physical quantity, the *force in the plane of a surface perpendicular to a line element of the surface, divided by the length of the line element. The *SI unit is the newton per metre (N m −1...

moment of force

moment of force   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...of force Symbol: M A physical quantity measuring the turning effect produced by a *force . It is a *pseudovector whose magnitude is rF ; F is the magnitude of the force and r the perpendicular distance from the force's line of action to the axis of rotation. Anticlockwise moments are opposite in sign to clockwise moments. The *SI unit is the newton...

moment of inertia

moment of inertia   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...of inertia Symbol: I A scalar physical quantity, the sum Σ mr 2 for all the particles of a body, where m is the mass of a particle and r its perpendicular distance from the axis under consideration. For a homogeneous body the sum is replaced by an integral. The *SI unit is the kilogram metre...

electric current density

electric current density   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...current density Symbol: J or j   A physical quantity, *electric current divided by the cross-sectional area of the current-carrying medium, the area being perpendicular to the direction of flow. The *SI unit is the ampere per square...

vector product

vector product   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...product A quantity involving two *vectors , a and b . It is denoted a × b (bold multiplication sign). It has a magnitude ab sin θ, where θ is the angle between the vectors a and b , and a direction perpendicular to the plane of a and b . A vector product is not however a true vector: under a space reflection ( a x becomes – a x , b x becomes – b x , etc.) the components of a  ×   b do not change sign. It is therefore often called a *pseudovector . Also called cross product...

pressure

pressure   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...Symbol: p A physical quantity, the *force acting perpendicular to an element of area, divided by the element of area. The term is best limited to liquids and gases and to solids in uniform isotropic compression. (In general for solids one is concerned with *stress , which is not usually isotropic or uniform.) The *SI unit is the pascal but the bar may also be used for fluid pressure. Use of the atmosphere, millimetre of mercury, and the torr is discouraged; these units should only be used for rough comparisons. The standard pressure for gases...

View: