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BABINET COMPENSATOR

Experiment(s):

1. Measurement of Birefringence of mica



Specifications:

a) Babinet compensator
assembly consists of
Polarizer: Graduated 360° scale
with LC 1°, mountable on to Upright
Mica Sheet
Fixed on a frame
Analyzer: Graduated 360° scale
with LC 1°, mountable on to upright
Quartz crystal box
consists of 2 quartz wedges cut
perpendicularly of its optical axes
Reading: Screw gauge type
reading micrometer
Movement: 25 mm
Resolution: 0.01 mm
Telescope with circular graduation

b) Sodium vapour lamp set
Lamp: Philips / Thorne 35 W
Lamp house: Single lamp type
with fixed slit openings
Transformer: 35 W, Instant ON type
Rated Input: 220 V/50 Hz
or 110 V/60 Hz

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