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Famous Like Me > Actress > N > Nicol

Profile of Nicol on Famous Like Me

 
Name: Nicol  
   
Also Know As:
   
Date of Birth: 27th January 1977
   
Place of Birth: Hungary
   
Profession: Actress
 
 
From Wikipedia, the free Encyclopedia
A Nicol prism

A Nicol prism is an optical device used to generate a beam of polarized light. It was invented in 1828 by William Nicol (1768-1851) of Edinburgh. It consists of a rhombohedral crystal of calcite (Iceland spar) that has been cut at a 68° angle, split diagonally, and then joined again using Canada balsam.

Unpolarized light enters one end of the crystal and is split into two polarized rays by birefringence. One of these rays (the ordinary or o-ray) experiences a refractive index of no = 1.658 and at the balsam layer (refractive index n = 1.55) undergoes total internal reflection at the interface, and is reflected to the side of the prism. The other ray (the extraordinary or e-ray) experiences a lower refractive index (no = 1.486), is not reflected at the interface, and leaves through the second half of the prism as plane polarized light.

Applications of Nicol prisms

  • Microscope
  • Polarimeter

This content from Wikipedia is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article Nicol