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x K ≘ ((x − 273.15) × 21 / 40 ... Celsius Fahrenheit Kelvin Rankine Delisle Newton Réaumur Rømer Comparison of temperature scales.
For an exact conversion between degrees Fahrenheit and Celsius, and kelvins of a specific temperature point, the following formulas can be applied. Here, f is the value in degrees Fahrenheit, c the value in degrees Celsius, and k the value in kelvins: f °F to c °C: c = f − 32 / 1.8 c °C to f °F: f = c × 1.8 + 32
The degree Celsius (°C) can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval (a difference between two temperatures). From 1744 until 1954, 0 °C was defined as the freezing point of water and 100 °C was defined as the boiling point of water, both at a pressure of one standard atmosphere.
It was -5 degrees Fahrenheit (-21 degrees Celsius) in Chicago, 5 F in Cleveland and 11 F in New York City, the NWS said. Those morning readings were balmy compared to the -39 F (-39 C) recorded ...
Anders Celsius's original thermometer used a reversed scale, with 100 as the freezing point and 0 as the boiling point of water.. In 1742, Swedish astronomer Anders Celsius (1701–1744) created a temperature scale that was the reverse of the scale now known as "Celsius": 0 represented the boiling point of water, while 100 represented the freezing point of water. [5]
However, the recommendation regarding risk of exposure to high indoor temperatures is only "conditional". Minimal-risk high temperatures range from about 21 to 30 °C (70 to 86 °F) depending on the region, with maximum acceptable temperatures between 25 and 32 °C (77 and 90 °F). [15] [16]
That same day, the Gale Crater on Mars warmed up to a high of minus 4 (minus 20 Celsius), Maue said. Hettinger, North Dakota, on Wednesday was the coldest spot in the nation at minus 45 (minus 43 Celsius), Orrison said. But by Sunday that part of North Dakota will soar to around 50 Fahrenheit (10 Celsius) for a 90-degree swing, Orrison said.
Most scientists measure temperature using the Celsius scale and thermodynamic temperature using the Kelvin scale, which is the Celsius scale offset so that its null point is 0 K = −273.15 °C, or absolute zero. Many engineering fields in the US, notably high-tech and US federal specifications (civil and military), also use the Kelvin and ...