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Celsius is a temperature scale that is primarily used in most parts of the world, including Europe and most countries that use the metric system. This temperature scale is based on the freezing point of water, which is defined as 0 degrees Celsius, and the boiling point of water, which is defined as 100 degrees Celsius, under standard atmospheric pressure.
Fahrenheit on the other hand, is primarily used in the United States and its territories. The freezing point of water on this scale is 32 degrees Fahrenheit and the boiling point is 212 degrees Fahrenheit, again under standard atmospheric pressure. The Fahrenheit scale was developed by Daniel Gabriel Fahrenheit, a German-Polish physicist in the 18th century.
The relationship between Celsius and Fahrenheit is linear. To convert temperatures from Celsius to Fahrenheit, you use the formula: F = (C * 9/5) + 32.
Fahrenheit = (Celsius * 9/5) + 32
Conversely, to convert Fahrenheit to Celsius, you use the formula: C = (F - 32) * 5/9.
Celsius = (Fahrenheit - 32) * 5/9
The Celsius scale is widely used in the scientific world for temperature measurements and in daily use in most countries outside the US for expressing weather forecasts and climate temperatures. Fahrenheit is used in the United States for virtually all temperature measurements, both in weather forecasting and in everyday applications, such as reading the thermostat or the temperature of an oven.