| 单词 | solar maximum thermometer |
| 释义 | > as lemmassolar maximum thermometer solar maximum n. (a) (more fully solar maximum thermometer) a type of thermometer intended to measure temperature under exposure to sunlight; (also) a temperature measured with such a thermometer; now rare; (b) the period of greatest activity in the eleven-year cycle of solar magnetic activity, coinciding with a marked increase in the number of sunspots. ΚΠ 1856 Athenæum 29 Mar. 406/2 (advt.) Professor Phillips's improved maximum thermometer... The following varieties now complete... Solar Maximum, for registering the heat produced by the direct action of the Sun's rays, 17s. 6d. 1875 Instr. Meteorol. Telegr. (Metereol. Office) (new ed.) 75 There is an ill-defined maximum of rain with the same period, which falls a year or two behind the solar maximum. 1880 Q. Jrnl. Royal Meteorol. Soc. 6 204 The solar maximum did not exceed 52°C. 1908 Bull. Amer. Geogr. Soc. 40 359 The black-bulb thermometer in vacuo... This ‘solar maximum thermometer’, as it is also called, has been designated the bête noire of meteorologists. 1980 Sci. News 23 Feb. 116/2 The present solar maximum will be the most widely observed in history, and possibly the most active since the one observed by Galileo. 2014 Times (Nexis) 2 Jan. 51 This recent solar maximum, though, was unusually feeble with few sunspots and weak storms. < as lemmas |
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