| 单词 |
illuminometer |
| 释义 |
illuminometer|ɪl(j)uːmɪˈnɒmɪtə(r)|
[f. illumination + -o + -meter.]
A photometer, esp. one for measuring the illumination of surfaces (rather than the intensity of light sources).
1895Houston & Kennelly in Operator & Electr. World 9 Mar. 309/2 The question at issue is..the degree of illumination actually produced, and this question cannot be decided by the photometer, but requires the use of an illumination measurer or illuminometer. Ibid. 310/2 We call our instrument an illuminometer and have filed applications for a patent on the same. 1908Illuminating Engineer (London) I. 714/2 It was proposed to use it [sc. Houston and Kennelly's photometer] for candlepower photometry as well as for the measurement of illumination. The unfortunate name ‘illuminometer’ was given to the instrument, and..this mongrel word is sometimes used at the present day. 1953Kirk & Othmer Encycl. Chem. Technol. XI. 326 The luminous intensity of the flame..can be measured by an illuminometer consisting of a barrier-layer photocell connected to a micro-ammeter. 1971Jrnl. Gen. Psychol. LXXXIV. 125 Exposure times of 40, 150, and 3500 msec and luminances of three and 30 fc, as read with a Macbeth Illuminometer, were employed. |
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