TERMIUM Plus®

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Consult the Government of Canada’s terminology data bank.

ZERO BEAT [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-01-16

English

Subject field(s)
  • Analytical Chemistry
  • Phraseology
  • Electrical Engineering
OBS

... Winefordner et al. described a special, more sensitive cell based on changes in dielectric constant and constructed to allow gas flow between the plates of a capacitor which is a part of the tank circuit of a 70-Mc/sec Clapp oscillator, the output of which is beat against that of a reference oscillator. With the difference frequency between oscillators adjusted to zero with pure carrier gas flowing through the detector, the presence of a foreign vapor in the cell will produce a different frequency which is linearly related to the amount of material introduced through an injection port in the carrier gas stream and inversely proportional to the absolute temperature for a given component at a constant density or concentration in the cell and for a particular operating frequency.

PHR

Reference, sample Clapp oscillator.

French

Domaine(s)
  • Chimie analytique
  • Phraséologie
  • Électrotechnique

Spanish

Save record 1

Record 2 1994-05-31

English

Subject field(s)
  • Mathematical Geography
  • Remote Sensing
DEF

The area(or volume) enclosed by adjacent lines(or surfaces) of zero phase of either the carrier beat phase signal, or of the difference between two carrier beat phase signals.

OBS

On the Earth’s surface a line of zero phase is the locus of all points for which the observed value would have an exact integer value for the complete instantaneous phase measurement. In three dimensions, this locus becomes a surface.

OBS

Term and definition provided by the Canadian Hydrographic Service.

French

Domaine(s)
  • Géographie mathématique
  • Télédétection
DEF

La surface (ou le volume) comprise entre des lignes (ou des surfaces) où est la phase est nulle soit pour le signal de phase de battement d'une porteuse, soit pour la différence entre deux signaux de phase de battement de porteuses.

Spanish

Save record 2

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