The Celsius temperature scale was invented by Anders Celsius in 1742, with 0 as the boiling point and 100 as the freezing point. The modern scale has reversed these values and is easier to calculate than Fahrenheit. Most countries use Celsius, while scientists use a combination of Celsius and Kelvin. In the US, Fahrenheit is used in everyday life, but conversions are provided for Celsius.
The Celsius temperature scale, which measures hot or cold, from 0° for ice water to 100° for boiling water, was invented by Anders Celsius, a Swedish astronomer, in 1742. He called the scale Celsius scale, and people may occasionally still see temperatures listed under this term. In 1954, however, scientists officially named the temperature scale after the astronomer to honor his work.
The original scale differs from the modern usage of Celsius. The creator set 0 as the boiling point of water and 100 as the freezing point. This was reversed shortly after his death for more modern use.
One advantage of the modern scale is that 0 to 100 calculations are much simpler than Fahrenheit calculations. 0°C is equivalent to 32°F. The boiling point of water, below 1° atmospheric pressure, is 100°C or 212°F. The 100 base method is simply easier to calculate than the more complex Fahrenheit formula. Conversion from Celsius to Fahrenheit follows this basic formula: F = (C x 1.8) + 32.
In modern times, most countries use Celsius measurements, not just for the weather, but for temperature measurements in baking and other applications. Scientists around the world use a combination of this scale and Kelvin measurements. The Kelvin scale is based on the fixed points of absolute zero, where nothing could be colder, and all matter solidifies, and the triple point of water, where gas, liquid and solid water are equally used. This scale is especially useful for discussing extreme temperatures.
In the United States, people generally use Fahrenheit in everyday use, but most weather channels also provide Celsius conversion. US-made cookbooks also usually give conversions, as cooking would be completely eliminated by following the instructions for one temperature scale in an oven that uses the other. A cake baked for one hour at 325°C (625°F) would be a disaster.
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