单词 | diaphanometer |
释义 | diaphaˈnometer [f. Gr. διαϕανής transparent, or rather its med.L. and Romanic adaptation diaphano- + -meter, Gr. µέτρον measure.] A measurer of transparency; spec. an instrument for measuring the transparency of the atmosphere.
1789Tilloch's Philos. Mag. III. 377 (Article) Description of M. de Saussure's Diaphanometer..The diaphanometer is..designed to show the greatness of the evaporation existing in any limited part of the atmosphere which surrounds us. The measure of transparency..is founded on the proportion of the distances at which determined objects cease to be visible. 1807T. Young Lect. Nat. Phil. & Mech. Arts II. 74. 1857 J. P. Nichol Cycl. Phys. Sc. |

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