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Abbe number

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WordReference Random House Unabridged Dictionary of American English © 2026

Ab′be num′ber, [Optics.]

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

see Abbe condenser

'Abbe number' also found in these entries (note: many are not synonyms or translations):

dispersive power - nu-value - relative dispersion

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