Celsius Scale Definition
Celsius scale, or centigrade scale, is a temperature scale that is based on the freezing point of water at 0°C and the boiling point of water at 100°C.
- The scale was introduced by and also named after the Swedish astronomer Anders Celsius in 1742 A.D. This scale uses the symbol °C.
- Initially, the Celsius scale used 0°C for the boiling point of water and 100°C for the melting point of ice, but the scale was later reinverted in the form that is used today.
- In this scale, the lower fixed point is considered 0°C, and the upper fixed point is considered 100°C.
- The region between these two temperatures is divided into 100 equal parts so that each part equals to one degree Celsius (1°C).
- Thus, in the inverted form of the Celsius scale, the freezing point of water is 0°C, and the boiling point of water is 100°C.
- However, a modern Celsius scale has been adopted that is based on the triple point of Vienna Standard Mean ocean water and has improved with the concept of absolute zero.
- According to this, the modern concept of the Celsius scale is not based on the freezing point and boiling point of water, but on the triple point of water.
- After May 2019, the absolute zero, the lowest temperature possible is denoted by 0K or -273.15°C. Before that, however, the temperature of the triple point of water was defined exactly at 273.16 K or 0.01 °C.
- The average human body temperature is 37°C on the Celsius scale.
- The formula for the conversion of Celsius scale into the Fahrenheit scale is given by:
°F = (9/5 × °C) + 32
- Celsius scale is commonly used in areas that use metric system units and thus is used for all scientific purposes.
Fahrenheit Scale Definition
Fahrenheit scale is a temperature scale that is based on the freezing point of water at 32°F and the boiling point of water at 212°F.
- The scale was introduced by and also named after the physicist Daniel Gabriel Fahrenheit in 1720 A.D. This scale uses the symbol °F.
- The lowest defining point in the Fahrenheit scale is the temperature of a solution of brine with an equal amount of ice, water, and salt (ammonium chloride).
- The temperature of the average human body was first established at 96°F, which was later adjusted to 98.6°F.
- In this scale, the lower fixed point is considered 32°F, and the upper fixed point is considered 212°F.
- The region between these two temperatures is divided into 180 equal parts so that each part equals to one Fahrenheit degree (1°F).
- Thus, the freezing point of water is 32°F, and the boiling point of water is 212°F on the Fahrenheit scale.
- The formula for the conversion of degree Fahrenheit to degree Celsius is given by:
°C = (°F – 32) × 5/9
- The absolute zero value in the Fahrenheit scale is -459.67° F.
- Fahrenheit scale is the first standardized temperature scale to be used in the world. It was prevalent in most English-speaking nations until the 1960s.
- The Celsius scale then replaced this scale after 1960 in most countries except the United States.
Celsius Scale vs. Fahrenheit Scale
|Basis for Comparison
|Celsius scale, or centigrade scale, is a temperature scale that is based on the freezing point of water at 0°C and the boiling point of water at 100°C.
|Fahrenheit scale is a temperature scale that is based on the freezing point of water at 32°F and the boiling point of water at 212°F.
|Celsius scale or simply Celsius is abbreviated as Degree C (°C).
|Fahrenheit is abbreviated as Degree F (°F).
|Introduced by or Named after
|It is named after the astronomer ‘Andres Celsius’.
|It is named after the physicist ‘Daniel Gabriel Fahrenheit’.
|The freezing point of water
|The freezing point of water or the melting point of ice in the Celsius scale is 0°C. It is the lower fixed point of the scale.
|The freezing point of water or the melting point of ice in the Fahrenheit scale is 32°F. It is the lower fixed point of the scale.
|The boiling point of water
|The boiling point of water, as described in the Celsius scale, is 100°C. It is the upper fixed point of the scale.
|On the Fahrenheit scale, the boiling point of water is 212°F. It is the upper fixed point of the scale.
|Average human body temperature
|The average human body temperature, as measured in the Celsius scale, is 37°C.
|The average human body temperature in the Fahrenheit scale is 98.6°F.
|Absolute zero value
|On the Celsius scale, the absolute zero value is set at -273.15°C.
|The absolute zero value in the Fahrenheit scale is -459.67°F.
|The melting and boiling point of water in the Celsius scale is divided into 100 equal divisions, each division representing 1°C.
|The melting and boiling point of water in the Fahrenheit scale is divided into 180 equal intervals, each division denoting 1°F.
|The Celsius scale is widely used in almost every part of the globe.
|Fahrenheit scale is mostly used in the United States and some of its territories.
|It can be converted into Fahrenheit by the formula;
°F = (9/5 × °C) + 32
|Degree Fahrenheit is easily convertible into Celsius by the formula;
°C = (°F – 32) × 5/9
Online temperature converter calculator
Celsius to Fahrenheit Converter
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Fahrenheit to Celsius Converter
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Celsius and Fahrenheit temperature table from -40°C to 100°C (-40°F to 212°F)
References and Sources
- 3% – https://www.lenntech.com/calculators/temperature/temperature.htm
- 3% – https://en.wikipedia.org/wiki/Celsius
- 3% – https://biodifferences.com/difference-between-celsius-and-fahrenheit.html
- 2% – https://en.wikipedia.org/wiki/Scale_of_temperature
- 2% – http://www.jspayne.com/php/SummaryGet.php?FindGo=Fahrenheit
- 1% – https://www.nextgurukul.in/wiki/concept/icse/class-7/physics/heat/temperature-and-its-measurement/3959265
- 1% – https://www.britannica.com/technology/Celsius-temperature-scale
- 1% – https://www.britannica.com/science/Fahrenheit-temperature-scale
- 1% – https://www.answers.com/Q/What_is_used_in_the_U.S_Celsius_or_Fahrenheit
- 1% – https://www.answers.com/Q/On_which_temperature_scale_is_100_degrees_the_boiling_point_of_water
- 1% – https://study.com/academy/lesson/what-is-centigrade-definition-conversion.html
- 1% – https://kids.britannica.com/students/article/heat/274809
- 1% – https://didyouknow.org/celsius/
- 1% – http://www.saburchill.com/physics/chapters/0097.html
- 1% – http://abyss.uoregon.edu/~js/glossary/temperature_scale.html
- <1% – https://www.scribd.com/document/381249252/general-science-pdf
- <1% – https://hypertextbook.com/facts/1997/LenaWong.shtml