abbe-number

Abbe number

noun Optics.
the reciprocal of the dispersive power of a substance.
Also called nu-value, relative dispersion.


Origin:
see Abbe condenser

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Abbe-number is always a great word to know.
So is slumgullion. Does it mean:
the offspring of a zebra and a donkey.
a stew of meat, vegetables, potatoes, etc.
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