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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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The action of ferrous oxide applied to the lens


- Point -

 Ferrous Oxide gives a lens green color and UV as well as Infrared absorption.



- Point Word-

  • Ferrous Oxide

  • green color

  • UV as well as Infrared absorption



- Explanation -

Iron oxide is a common colorant in glass. It has a blue-green color and is mainly used in the manufacture of beer bottles and green eyeglass lenses.

 Iron oxide is a common colorant in glass. It has a blue-green color and is mainly used in the manufacture of beer bottles and green eyeglass lenses.






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