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Dispersion = Abbe Number or Constringency Value and Nu Value

- Point -  Dispersion is categorized by Abbe Number or as it is also known by Constringency Value or Nu Value. - Point Word- Dispersion Abbe Number Constringency Value Nu Value - Explanation -  Dispersion refers to the state in which light is scattered or spread out. It refers to the separation of the constituent colors of light, like a rainbow.  Abbe Number is an optical property that describes how much a transparent material scatters light. It is a measure of chromatic dispersion. A higher Abbe Number indicates less dispersion and less chromatic aberration.
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Nystagmus


- Point -

 Nystagmus - A fluctuation of the eye often associated with light sensitivity - Photophobia



- Point Word-

  • Nystagmus

  • A fluctuation of the eye often associated with light sensitivity

  • Light sensitivity

  • Photophobia



- Explanation -


There are several forms of Nystagmus. Nystagmus is a phenomenon in which the eyeballs shake. It can occur through several mechanisms. It can be broadly divided into congenital and acquired, and appears for numerous reasons.
There are several forms of Nystagmus.

Nystagmus is a phenomenon in which the eyeballs shake. It can occur through several mechanisms. It can be broadly divided into congenital and acquired, and appears for numerous reasons.



Horizontal nystagmus is an involuntary horizontal movement of the eyeball.

Image above : Horizontal nystagmus is an involuntary horizontal movement of the eyeball.
Credit : Wikipedia, Wkikpedia website   link


Nystagmus   <--- Wikipedia






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