TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A mechanism found on camera lenses that allows focusing using the widest diaphragm aperture and then go back to the selected opening for shooting.  2, record 1, English, - preselector

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Dispositif équipant un objectif d'appareil-photo qui permet de faire la mise au point en utilisant la plus grande ouverture du diaphragme et de passer ensuite directement à l'ouverture choisie pour la prise de vue, sans nécessité de lire le diaphragme.  3, record 1, French, - pr%C3%A9s%C3%A9lecteur

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Recently two new types of lightning have been verified : red sprites and blue jets. These atmospheric discharges occur very high in the Earth's atmosphere-much higher than the familiar form of lightning. Blue jets appear blue in color and go from the tops of clouds to a height of about 50 kilometers. Because blue jets typically last almost a full second, one can easily see the jet rise from the clouds with a fast video camera. Blue jets appear as narrow cones and travel about 100 kilometers per second. The existence of blue jets has been suggested previously, but only in 1994 were aircraft flown above massive thunderstorms with the high speed video equipment necessary to verify these spectacular events.  2, record 2, English, - blue%20jet

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

Phénomène atmosphérique encore méconnu. Flashes fugaces rougeoyants,farfadets rouges ou bleutés qui prennent naissance, lors de puissants orages, au sommet des cumulo-nimbus, et se projettent en quelques millisecondes jusqu'à des altitudes pouvant atteindre 95 kilomètres. Ces éclairs s'accompagnent de phénomènes électromagnétiques intenses, notamment des bouffées de rayonnement gamma.  2, record 2, French, - jet%20bleu

Record 2,  Textual support,  Spanish