OBJECTIVE 

Fresnel biprism is used to divide the wavefront of a monochromatic, coherent beam of light producing an interference pattern. The wavelength of the light is determined.

Features

• Corrosion resistance
• Robust design
• Superior strength

CONSISTS

Bi-Prism Holder             Aluminium die cast  6inch dia with 25 mm hole in the middle and having three metallic blocks L shape for holding Bi prism which                                             has a fine radial motion by a fine pitch screw.

Lens Holder spring type for equal opening & closing of both sides.(OPTIONAL)

Micrometer Eye Piece         FOR Viewing the Bi prism fringes Ramdsem Eye Piece, 10 x, is provided and it is carried on a slider which moves Horizontally along                                                 a micrometer screw. You can count the fringes thus on the micrometer screw.

Optical Slit                         Ground S.S. Jaws having spring action for opening . A screw is provided for opening the slit.

Fresnel Bi-Prism                 Size : 40 mm  x  32 mm made of Crown Glass optically true having a small wedge in the middle

Optical Bench 

RODS:                 It consists of two metallic rods (one rod is engraved in mms) overall length 170 cms X 18 mm thick , Scale length 150 cms. 

FEET                 supported by heavy cast iron feet of 8 inch x 6 inch

RIDERS             provided with 4 metal riders -2 of these provided with fine cross motion & 2 w/o motion. All the 4 sliders are fitted with hollow pillars .one                                 screw with 4 inch x 14 mm metal painted strip for tightening rider is provide on each rider. All the riders are half shapered

LENS HOLDER:  U shape Die cast Iron Lens Holder provided with a groove for holding  lens, with upper part movable - 2 nos.  

OPTICAL PINS: M.S. chromed 12 mm half shapered  Needles - 2 nos