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obturateur magnéto-optique [1 record]

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Record 1 2004-08-03

English

Subject field(s)
  • Lighting
  • Photography
DEF

A shutter used in high-speed photography for exposures of about 1 microsecond.

OBS

Dense flint glass in a magnetic coil is placed between cross polarisers. The magnetic field produced by discharging a capacitator through the coil rotates the plane of polarisation of the light entering the glass so that it can pass through the second polariser.

French

Domaine(s)
  • Éclairage
  • Photographie
DEF

Obturateur muni d'un système comportant une bobine à laquelle est appliquée une impulsion magnétique produisant un temps de passage extrèmement rapide d'un faisceau lumineux.

Spanish

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