Function and Applications
To measure light wavelengths and refractivity of liquids and gases.
Equipment and Technical Data
- metal base plate 120 x 120 mm with a removable holding stem and adjustable surface mirrors 30 x 30 mm
- Fine shoots to the tilt adjustment of the fixed mirror
- Bracket for additional required cells for investigation of gases
Specifications:-
(1) Mechanical
(2) The optical-mechanical part consists of the following items
a) bed: bed is optically ground, length 250mm
b) lead screw: lead screw is optically ground with its nut, length 200 mm pitch 1 mm
c) optical mirror mount: kinematic mirror mounts are to hold the mirror which is aligned in an orthogonal direction using screws provided at the rear of the mount.
optical parts consist of the following items:
a) beam splitter
b) compensating plate size 45mm× 32mm × 8mm 50mm× 35mm × 8mm beam splitter and compensating plates are covered from the same optically worked glass plate
surface flatness : λ/10 (both faces)
parallelism : 5 arc sec.
mirrors : 2nos.
focal length : 25mm thickness 10mm
front surface : coating material : coated ai with sio2
l. C. Of instrument :10¯4mm
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