섭씨
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정의
표준 대기압(101.325 kPa)에서 물의 어는점을 0°C, 끓는점을 100°C로 정한 미터법 온도 척도.
설명
Named after Swedish astronomer Anders Celsius, who proposed the scale in 1742. Convert to Fahrenheit: °F = (°C × 9/5) + 32; to Kelvin: K = °C + 273.15. Key reference points: −40°C equals −40°F (the only temperature where both scales agree); body temperature is 37°C (98.6°F); a comfortable room is 20–22°C (68–72°F). Celsius is the official temperature unit in 195 of 197 countries.
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