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CENTER ARC [13 records]

Record 1 2013-03-26

English

Subject field(s)
  • Mathematical Geography
CONT

"Average gradient" of air survey film is defined as follows : the lower point M is located on the characteristic curve where the net density is 0. 30. With point M as center an arc is described with radius equal to 1. 5 on the Log E or density scale. The intersection of this arc with the characteristic curve determines the upper point N. The average gradient is the slope of the line MN.

French

Domaine(s)
  • Géographie mathématique
CONT

Photographie. Contraste d'une émulsion, pente de la courbe qui représente le cologarithme du facteur de transmission (densité optique) en fonction du logarithme de l'éclairement.

Spanish

Save record 1

Record 2 2012-02-07

English

Subject field(s)
  • Symptoms (Medicine)
DEF

Any reflex whose arc is connected with a center in the spinal cord.

French

Domaine(s)
  • Symptômes (Médecine)
DEF

Réflexe dépendant d'un centre situé dans la moelle épinière.

Spanish

Campo(s) temático(s)
  • Síntomas (Medicina)
Save record 2

Record 3 2011-07-27

English

Subject field(s)
  • Mathematical Geography
CONT

The demicircle is for measuring and indicating angles with a revolving bar mounted on a pivot at the center of the circle, and a compass set firmly in the plane of the graduated arc.

French

Domaine(s)
  • Géographie mathématique
DEF

Arc de circonférence servant à la mesure des angles et portant une graduation en degré ou grades et en subdivisions de ces unités.

Spanish

Save record 3

Record 4 2011-02-07

English

Subject field(s)
  • Vulcanology and Seismology
  • Petrography
DEF

A roughly circular dike that is vertical or inclined away from the center of the arc.

OBS

ring-fracture intrusion: term used at Natural Resources Canada - Earth Sciences Sector.

Key term(s)
  • ring-dike
  • ring-dyke
  • ring fracture intrusion

French

Domaine(s)
  • Volcanologie et sismologie
  • Pétrographie
CONT

La structure concentrique du massif est soulignée en outre par des dykes circulaires ou polygonaux, disposés en couronne plus ou moins continue à l'extérieur du batholite. Ces dykes annulaires («ring dykes») sont constitués par des roches analogues à celles du massif central, ou par les porphyres correspondants ou des laves, toutes ces roches pouvant être de chimisme analogue ou au contraire fortement différenciées.

OBS

filon annulaire; ring dyke : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Vulcanología y sismología
  • Petrografía
Save record 4

Record 5 2008-08-25

English

Subject field(s)
  • Petrography
  • Vulcanology and Seismology
DEF

An arcuate dike forming part of a concentric set that dips inward toward the center of the arc.

CONT

Mineralized carbonatites are found in lava flows and tephra, plugs, cone sheets, dykes ...

OBS

cone sheet: term used at Natural Resources Canada - Earth Sciences Sector.

PHR

Nested cone sheet.

French

Domaine(s)
  • Pétrographie
  • Volcanologie et sismologie
CONT

Les «cone-sheets» (feuillets coniques) sont des dykes généralement plus minces que les dykes annulaires ordinaires (ring-dikes) et postérieurs à ceux-ci. Ils sont remplis par de la lave. Tandis que le sommet du cône semble vers le haut, au-dessus de la surface d'érosion, pour les dykes annulaires, il est au contraire vers le bas pour les cone-sheets.

CONT

Des carbonatites minéralisées peuvent être présentes dans des coulées de lave et des tephras, des culots, des feuillets coniques, des dykes [...]

OBS

feuillet conique : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

PHR

Feuillet conique emboîté.

Spanish

Save record 5

Record 6 2002-11-13

English

Subject field(s)
  • Heat Treatment: Intervening Factors (Metals)
  • Thermoelectricity and Thermoelectronics
CONT

The new 60-megawatt segmented arc heater, known as H3, significantly improves AEDC' s [Arnold Engineering Development Center] present arc capabilities... Arc heaters such as H3 produce the high pressures and heat fluxes required for testing thermal protection materials used for nose tips and heat shields. Arc heater tests provide information to manufacturers about the probable condition a space vehicle component would experience following re-entry into Earth's atmosphere. An arc heater is basically a large tube that high-pressure air runs through. The air is heated by discharging tens of megawatts of power using an electric arc similar to a lightning bolt. At the nozzle, or downstream end of the heater, test personnel install models or materials and subject them to simulated high pressure and temperature conditions generated by the bolt. Temperatures range from 5, 000 to 15, 000 degrees Fahrenheit, requiring each component to be water-cooled.

French

Domaine(s)
  • Traitement thermique des métaux (Facteurs)
  • Thermoélectrique et thermoélectronique

Spanish

Save record 6

Record 7 2002-05-16

English

Subject field(s)
  • Mathematics
  • Trigonometry
DEF

a unit of plane angular measurement equal to the angle at the center of a circle subtended by an arc equal in length to the radius

French

Domaine(s)
  • Mathématiques
  • Trigonométrie
DEF

Angle plan, ayant son sommet au centre d'un cercle, interceptant sur la circonférence de ce cercle, un arc de longueur égale au rayon.

Spanish

Campo(s) temático(s)
  • Matemáticas
  • Trigonometría
DEF

Ángulo plano entre dos radios de un círculo que corta, sobre la circunferencia, un arco de longitud igual al radio.

Save record 7

Record 8 2001-09-20

English

Subject field(s)
  • Flight Instruments and Equipment (Aeroindustry)
  • Aircraft Piloting and Navigation
  • Navigation Instruments
CONT

The amplifier is the coordination and distribution center for all system electrical signals. Remote compass transmitter signals arc phase detected to resolve for the 180-degree ambiguity and arc sent to the slaving torque motor to keep the gyro spins axis aligned with magnetic north-south. The amplifier also provides high voltage to the slaving torque motor for any periods of fast slaving;...

OBS

slaving: The use of a torquer to maintain the orientation of the spin axis relative to an external reference, such as a pendulum or magnetic compass.

French

Domaine(s)
  • Instruments et équipement de bord (Constructions aéronautiques)
  • Pilotage et navigation aérienne
  • Instruments de navigation
CONT

Accéléromètre gyroscopique [...] On souhaite mesurer l'accélération suivant l'axe Z1. Le rôle du moteur Mo est alors de maintenir [thêta]=0, en exerçant un couple d'asservissement [tau] sur l'axe Z1 de l'armature externe. Il y a donc détection d'un écart angulaire et commande du couple de contre-réaction.

Spanish

Save record 8

Record 9 2001-09-04

English

Subject field(s)
  • Flight Instruments and Equipment (Aeroindustry)
  • Aircraft Piloting and Navigation
  • Navigation Instruments
CONT

The amplifier is the coordination and distribution center for all system electrical signals. Remote compass transmitter signals arc phase detected to resolve for the 180-degree ambiguity and arc sent to the slaving torque motor to keep the gyro spins axis aligned with magnetic north-south. The amplifier also provides high voltage to the slaving torque motor for any periods of fast slaving;...

OBS

slaving: The use of a torquer to maintain the orientation of the spin axis relative to an external reference, such as a pendulum or magnetic compass.

French

Domaine(s)
  • Instruments et équipement de bord (Constructions aéronautiques)
  • Pilotage et navigation aérienne
  • Instruments de navigation
CONT

Accéléromètre pendulaire. Un pendule constitué d'une bobine inductive se déplace sous l'effet de la force spécifique, une bobine de détection et un moteur couple d'asservissement permettent la mesure de cette force spécifique suivant l'axe sensible du pendule.

OBS

asservissement de gyroscope : Noter que le terme asservissement est utilisé ici au sens concret et qu'il désigne un appareil et non pas une action.

Spanish

Save record 9

Record 10 2001-02-28

English

Subject field(s)
  • Informatics
CONT

Notice in the drawing routines, especially the arc routines, that familiarity with how the arc routine works is important. In the first arc statement, the command arc is executed and the first point is entered. The center option is chosen before the second point is entered. At this point, you should be able to decipher what is happening in the first nine statements of this function. Next, the arc number value is initialized and set. This value counts how many times you run through this routine. Each time you run through the routine, you create one first arc. The next statement calculates the arc length by calculating the distance between the start and end points of the first arc. Now that you have the arc number and the length of the arcs, you can calculate the overall length of the insulation. Notice the last statement of the routine. That is precisely what happens. In the while loop, the variable total is compared to the wall length. If the total variable is less than the wall length variable, the routine will be run again. Otherwise, the routine is ended.

French

Domaine(s)
  • Informatique
OBS

Le calcul des arcs, anneaux et tubes circulaires.

Spanish

Save record 10

Record 11 1999-05-11

English

Subject field(s)
  • Mathematics
DEF

A quarter of a circle, an arc of 90°, or an arc subtending a right angle at the center.

French

Domaine(s)
  • Mathématiques
DEF

Quart de la circonférence du cercle.

Spanish

Save record 11

Record 12 1998-12-17

English

Subject field(s)
  • Medical and Surgical Equipment
  • The Eye
DEF

A perimeter consisting of a semicircular frame at the center of which the patient looks while a white object is moving along the arc, the exact point where it becomes visible or invisible being noted and recorded on a chart.

French

Domaine(s)
  • Équipement médico-chirurgical
  • Oeil
OBS

Source MVISI-F : Le nouveau dictionnaire de la vision par Michel Millodot, Médiacom Vision Éditeur, 1997.

Spanish

Save record 12

Record 13 1998-08-05

English

Subject field(s)
  • Industrial Design
CONT

A tangent to a circle is a straight line that touches the circle at one point only. The point on the circle touched by the tangent is called the point of tangency or tangent point.

CONT

Straight or curved lines are tangent to a circle or arc when the line touches the circle or arc at only one point. If a line were to connect the center of the circle or arc to the point of tangency, the tangent line and the line from the center would form a 90 ° angle.

French

Domaine(s)
  • Dessin industriel
DEF

Lieu où une courbe et sa tangente se touchent.

CONT

Une droite est tangente à une circonférence lorsqu'elle la touche en un seul point (...). La tangente est perpendiculaire au rayon qui aboutit au point de contact.

CONT

On trace au crayon le cercle en entier et sa tangente pour ensuite effacer la portion du cercle qui est de trop; à l'encre, on doit arrêter le cercle au point de contact et continuer ensuite avec la tangente (...)

Spanish

Save record 13

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