Metric System

Celsius

Definition

Eine metrische Temperaturskala, bei der 0 °C dem Gefrierpunkt und 100 °C dem Siedepunkt von Wasser unter Normaldruck (101,325 kPa) entspricht.

Erklärung

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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