What device is used to measure the relative humidity of air?

pyranometer
disdrometer
kata-thermometer
psychrometer
A psy­chrom­e­ter, or wet-and-dry-bulb ther­mome­ter, consists of two ther­mome­ter­s, one that is dry and one that is kept moist with dis­tilled water on a sock or wick. The two ther­mome­ters are thus called the dry-bulb and the wet-bul­b. At tem­per­a­tures above the freezing point of water, evap­o­ra­tion of water from the wick lowers the tem­per­a­ture, so that the wet-bulb ther­mome­ter usually shows a lower tem­per­a­ture than that of the dry-bulb ther­mome­ter.

Answers distribution

pyranometer
disdrometer
kata-thermometer
psychrometer
answers
flagthe United States
15%
26%
15%
42%
19
flagGermany
16%
28%
16%
40%
25
flagPoland
19%
25%
22%
32%
1421
flagthe United Kingdom
18%
27%
24%
29%
54

Gender

men24%
women31%
pyranometer
21%
18%
disdrometer
26%
23%
kata-thermometer
27%
25%
psychrometer
24%
32%

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