diaphanometern.

Etymology: < Greek διαϕανής transparent, or rather its medieval Latin and Romanic adaptation diaphano- + -meter comb. form².Previous versions of the OED give the stress as: diaphaˈnometer.

A measurer of transparency; spec. an instrument for measuring the transparency of the atmosphere.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > instruments for measuring > [noun] > light or radiation

phaometer1747

photometer1779

diaphanometer1789

lucimeter1825

refractometer1842

Abbe refractometer1876

dietheroscope1877

reflectometer1879

radiomicrometer1887

holophotometer1888

flicker photometer1896

microphotometer1899

diffractometer1909

spot meter1952

photopolarimeter1971

1789 Tilloch's Philos. Mag. 3 377 (heading) 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.

1807 T. Young Course Lect. Nat. Philos. II. 74.

1857 J. P. Nichol Cycl. Physical Sci.

This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2019).

单词	diaphanometer
释义	diaphanometern. Etymology: < Greek διαϕανής transparent, or rather its medieval Latin and Romanic adaptation diaphano- + -meter comb. form².Previous versions of the OED give the stress as: diaphaˈnometer. A measurer of transparency; spec. an instrument for measuring the transparency of the atmosphere. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instruments for measuring > [noun] > light or radiation phaometer1747 photometer1779 diaphanometer1789 lucimeter1825 refractometer1842 Abbe refractometer1876 dietheroscope1877 reflectometer1879 radiomicrometer1887 holophotometer1888 flicker photometer1896 microphotometer1899 diffractometer1909 spot meter1952 photopolarimeter1971 1789 Tilloch's Philos. Mag. 3 377 (heading) 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. 1807 T. Young Course Lect. Nat. Philos. II. 74. 1857 J. P. Nichol Cycl. Physical Sci. This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2019). < n.1789
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