TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

LOG SCALE [3 records]

Record 1 2011-12-20

English

Subject field(s)
  • Mathematics
  • Statistics
  • Metrology and Units of Measure
DEF

A scale in which the distances between numbers are proportional to their logarithms.

CONT

The acidity or alkalinity of a substance is measured on a logarithmic scale from 0 to 14, known as pH. ... Due to the logarithmic nature of the scale, a pH of 4 is 10 times more acidic than a pH of 5 and 100 times more acidic than a pH of 6.

CONT

Some nonlinear scales are given special names such as logarithmic scale, square-law scale.

French

Domaine(s)
  • Mathématiques
  • Statistique
  • Unités de mesure et métrologie
DEF

Échelle par laquelle les grandeurs réelles sont représentées par des longueurs proportionnelles au logarithme de ces grandeurs.

CONT

Si les concentrations sont exprimées en moles par litres, à 25 °C, le produit (H+) x (OH-) est égal à 1x10 [exposant-14]. [...] Cette constatation amena [...] S.P.L. Sorensen à proposer, en 1909, l'utilisation d'une échelle logarithmique dite de «pH» [...].

Spanish

Save record 1

Record 2 1998-04-28

English

Subject field(s)
  • Forestry Operations
  • Wood Sawing
DEF

A ... rule used by lumberjacks and sawmill operators for computing the amount of wood in logs. They are graduated according to various logs. They are graduated according to various systems - such as Doyles' system.

OBS

Used for calculating cubic contents of logs.

French

Domaine(s)
  • Exploitation forestière
  • Sciage du bois
DEF

Règle graduée de manière à estimer le volume cubique du bois rond ou scié.

Spanish

Save record 2

Record 3 1997-10-05

English

Subject field(s)
  • Metrology and Units of Measure
  • Forestry Operations
CONT

The amount of timber cut is calculated by scaling, which denotes the expression of the measurement or counting of logs in the round, in cubic feet, stacked cords, board feet, linear feet or pieces.

Key term(s)
  • log scale

French

Domaine(s)
  • Unités de mesure et métrologie
  • Exploitation forestière
DEF

Détermination du volume des grumes résultant d'un abattage, par une mesure cubique.

Spanish

Save record 3

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