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273 (number) : ウィキペディア英語版 | 273 (number)
273 (two hundred () seventy-three, CCLXXIII) is the natural number following 272 and preceding 274. 273 is a figurate number, a truncated triangular pyramid number. There are 273 different ternary trees with five nodes. ==In other fields== The zero of the Celsius temperature scale is (to the nearest whole number) 273 Kelvin. Thus, absolute zero (0 K) is approximately -273°C.〔.〕 The freezing temperature of water and the thermodynamic temperature of the triple point of water are both approximately 0°C or 273 K.〔.〕〔.〕
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