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HALF PLANE [11 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-02-29

English

Subject field(s)
  • Facilities and Equipment (Wood Industries)
DEF

A steel bed plate with its upper surface in two halves at different levels, but parallel and carefully ground plane. Between the two halves the adzing cutter block rotates, so that its blades project above one half and are level with the other half.

OBS

"Truing machine", derived from an undocumented record, is not shown as a synonym because its usage could not be confirmed.

Key term(s)
  • truing machine
  • planer

French

Domaine(s)
  • Installations et équipement (Industr. du bois)
DEF

Machine servant à dégauchir, sorte de raboteuse mécanique.

Spanish

Save record 1

Record 2 2016-02-25

English

Subject field(s)
  • Mathematics
OBS

A function which is automorphic with respect to the modular group(or a subgroup of the modular group) and which is single-valued and analytic in the upper half of the complex plane, except for poles.

French

Domaine(s)
  • Mathématiques

Spanish

Save record 2

Record 3 2011-02-11

English

Subject field(s)
  • Chemistry
DEF

When the scattering in the half plane from [phi]=0° to 180° is symmetrical with that form [phi]=180° to 360°, this term is defined as the ration of the scattered irradiance at two scattering angles symmetrical about [phi]=90°.

OBS

The word "phi" must be replaced by the corresponding Greek letter.

Key term(s)
  • light scattering dissymmetry

French

Domaine(s)
  • Chimie
OBS

[Se dit de la lumière] lorsque la diffusion dans le demi-plan [phi] = 0 à 180° est symétrique par rapport à celle observée de [phi] = 180 à 360°, l'expression est définie comme le rapport de l'irradiance à deux angles de diffusion symétrique, avec [phi] = 90° environ.

OBS

Le mot «phi» doit être remplacé par la lettre grecque correspondante.

Spanish

Save record 3

Record 4 2009-01-14

English

Subject field(s)
  • Spacecraft
CONT

The principle of staging rockets is similar to a plane jettisoning its empty wing tanks. When half the fuel is burned the rest is pumped into center tanks and empty rockets dropped.

French

Domaine(s)
  • Engins spatiaux
CONT

Sur le principe de la fusée à étages multiples [...] l'engin abandonne des charges inutiles à mesure que le combustible est consommé [...] on largue les réservoirs correspondants.

Spanish

Save record 4

Record 5 2004-10-21

English

Subject field(s)
  • Mathematics
DEF

A half of sphere, formed by plane through sphere's center.

French

Domaine(s)
  • Mathématiques
DEF

chacune des deux moitiés d'une sphère limitée par un des plans passant par le centre.

Spanish

Campo(s) temático(s)
  • Matemáticas
Save record 5

Record 6 2002-10-23

English

Subject field(s)
  • Radio Transmission and Reception
DEF

An array of parallel horizontal coplanar dipoles, generally full-wave, half a wavelength apart in a vertical plane.

OBS

pinetree aerial: term standardized by the International electrotechnical Commission (IEC).

OBS

In Teleglobe’s Antenna Theory, "pine-tree antenna" is given as synonymous with "pine-tree array". The IEC suggests that a "pinetee array" consists of two "pinetree aerials" (aerial = antenna in North America), one serving as a reflector for the other.

Key term(s)
  • pinetree antenna

French

Domaine(s)
  • Émission et réception radio
DEF

Réseau d'antennes comprenant des doublets horizontaux, parallèles, superposés dans un plan vertical, généralement espacés d'une demi-longueur d'onde et alimentés en phase en leurs centres par des lignes de transmission.

OBS

rideau de doublets : Terme et première définition normalisés par l'AFNOR; Terme et deuxième définition normalisés par la CEI.

Spanish

Save record 6

Record 7 2000-06-13

English

Subject field(s)
  • Hand Tools
  • Finish Carpentry (Wood Industries)
CONT

The smoothing planes are the shortest, ranging in length from 5 and one half to 10 inches and designed for finishing and leveling flat surfaces after the jack plane has been used on them. Because of its size it is ideal for leveling small areas.

French

Domaine(s)
  • Outillage à main
  • Menuiserie (Industr. du bois)

Spanish

Save record 7

Record 8 1999-06-16

English

Subject field(s)
  • Molecular Biology
  • Bioengineering
CONT

One of the most important new designs in the field of laser scanning microscopy is Bio-Rad's new multiphoton microscope. The primary benefit of multiphoton or two-photon microscopy is that it can penetrate much deeper into tissue samples, permitting an unobstructed view of cells such as neurons. The way it accomplishes this feat involves an unusual characteristic of light. When two photons hit a fluorophor simultaneously, it's as if one photon of half the wavelength excited the targeted fluorophor. If two photons of infrared light are directed at a particular sample, they will penetrate to a depth of several millimeters and then combine in the focal plane where the photons are most concentrated, reacting as if one photon of blue light hit the sample. The result is a deep tissue image of superior resolution. Although confocal and multiphoton techniques are generally considered to be overlapping technologies, some enthusiastic supporters consider the multiphoton technique a replacement for confocal microscopy.

French

Domaine(s)
  • Biologie moléculaire
  • Technique biologique
CONT

La microscopie multiphotons ou plus précisément deux ou trois photons, peut être considérée comme une évolution de la microscopie confocale [...] Le principe de la microscopie à deux photons consiste à exciter un fluorochrome, non plus au moyen d'un seul photon de haute énergie (E), mais de deux photons dont les énergies sont diminuées de moitié (E/2)[...] la quantité de radicaux libres produits est très nettement réduite. Ce type de microscopie utilise de très courtes émissions de lumière, générées par des lasers infrarouges de puissance élevée.

OBS

Tiré du Technoscope.

Spanish

Save record 8

Record 9 1999-05-12

English

Subject field(s)
  • Mathematical Geography
  • Types of Aircraft
CONT

When the photographic plane flies along a flight line at great height the photographer takes successive pictures which overlap each other more than half. Thus every point appears at least on two pictures.

Key term(s)
  • photographic airplane

French

Domaine(s)
  • Géographie mathématique
  • Types d'aéronefs
CONT

Les avions photographiques doivent avoir un plafond de vol élevé, une grande autonomie, une excellente visibilité vers l'avant et le bas pour permettre une navigation précise et pour les prises de vue à grande échelle, enfin une vitesse assez faible; ils doivent être servis par un personnel hautement qualifié.

Spanish

Save record 9

Record 10 1993-04-27

English

Subject field(s)
  • Industrial Design
CONT

Often a small portion of a part may be broken away to expose and clarify an interior feature. This technique is called a broken-out section. There is no cutting-plane line used ... A short break line is generally used with a broken-out section.

CONT

A broken section is used mainly to expose the interior of objects so constructed that less than a half section is required for a satisfactory description.... The object theoretically is cut by a cutting plane and the front portion is removed by breaking it away. The "breaking away" gives an irregular boundary line to the section.

French

Domaine(s)
  • Dessin industriel
CONT

Coupe locale (...) -- Elle permet la représentation, sans pointillés, des formes intérieures pour certains détails (trous taraudés, rainures de clavette, etc.).

Spanish

Save record 10

Record 11 1980-08-15

English

Subject field(s)
  • Hand Tools
CONT

The router plane has two knobs, a depth gauge, and an adjustment for cutter depth. Router planes are equipped with three cutters-one quarter and one half inch square cutters and a V cutter. It is used for surfacing the bottom of grooves, dadoes and recesses parallel with the surface of the stock.

French

Domaine(s)
  • Outillage à main
CONT

La guimbarde a un fût en métal, deux boutons aux extrémités, un guide de profondeur, une vis d'ajustement du fer en profondeur. Elle est équipée de trois couteaux dont deux droits de un quart (6 mm) et un demi po. (13 mm) et un en pointe de diamant. Elle est utilisée pour dresser le fond des entailles et des rainures.

Spanish

Save record 11

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