Why do we have 3 ways to measure temperature?
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Why do we have 3 ways to measure temperature?

[From: Physics] [author: ] [Date: 03-14] [Hit: ]
Why do we have 3 ways to measure temperature?Fahrenheit, Celsius, and Kelvin. Are there more? What are their uses?......

Why do we have 3 ways to measure temperature?
Fahrenheit, Celsius, and Kelvin.
Are there more? What are their uses?

say: In Western Culture?
goring say: Temperature can be measured by using different frames of reference to indicate the same amount of power can enter an atom or exit an atom. In other word 3 different frames of reference to indicate the same thing.
Philomel say: Lord Kelvin was a physicist and based his scale on the boiling point and freezing point of water.
Fahrenheit was a biologist and based his scale on the coldest and hotest temperatures he would need to measure but easily produce. 0 Deg F is the temperature of a stirred bath of 1 pound of salt and 1 pound of snow. 100 deg F is the rectal temperature of a Humming bird.
The Kelvin scale is the calculated temperature of absolute zero and the Centigrade scale.

Rankine simply takes the F scale and extrapolates it to absolute zero.
There are 8 recognized temperature scales:

Steven say: Fahrenheit created his scale to cover the weather where he lived (0 to100).
Celsius is based on the freezing (0) and boiling (100) temperature of water.
Kelvin is just moving a Celsius scale down to absolute zero.
Rankine is just moving a Fahrenheit scale down to absolute zero.
There are 9 Fahrenheit degrees for every 5 Celsius degrees, and 0C=32F.
NONAME say: well it cant be -32 degrees outside...and yet absolute zero is way way colder so whats your idea?
Andrew Smith say: Whenever we have different scales to measure the same quantity it comes from one of
historical, political or functional differences.

Large distances are not convenient to measure in mm. So we use km.
But in the old fashioned IMPERIAL scale different measures of mass came from their different uses.
Ounces troy, fluid ounces, pounds, stones, hundredweight, quarters, Long tons, short tons, bakers tons.

Temperature is no different. We are measuring the same thing but what is convenient.
For day to day use the Celsius or the Fahrenheit scale gives a convenient sized number.

For calculating the expansion of gases Kelvin makes the mathematics work so much better.

Celsius was designed to give a simpler and more accurate set of divisions. The reference points can be established almost anywhere.

And Fahrenheit owes its existence to a time when we knew a lot less than we know today.
It was an attempt to produce a scale that encompassed all possible temperatures.
Where today we know that there are colder temperatures than salted ice.
And higher temperatures than boiling water.

So that scale has no particular or special function but it is retained in some places simply for a historical convenience.

Obviously there can be other scales used for other purposes.
sojsail say: There are 8 different temperature scales listed in https://en.wikipedia.org/wiki/Scale_of_t...
There are 3 of those that are still relatively well known.

Fahrenheit was the first temperature scale, developed by Fahrenheit in 1724. It has some inconvenient features and in 1742 Celsius developed Centigrade (later renamed Celsius). In 1848, Lord Kelvin proposed that a scale was needed for specific scientific purposes based on absolute zero and the triple point of water. That recommendation has been developed and the Kelvin has been designated the SI unit for recording temperature. The last adjustment (fine-tuning) to the Kelvin system was on 16 November 2018.
electron1 say: Most people in the United States of America use Fahrenheit to measure the temperature. When a radio station or a television station tells you the outside temperature, it will be in degrees Fahrenheit. If you ask them why they use this system, they will tell you that stores in America only sell this type of that most stores in America do not sell Celsius or Kelvin thermometers. The same thing is true about using the metric system. You can’t buy a liter of milk in the United States. In junior or senior high physical science classes Celsius or Kelvin temperature scales are used. I hope this is helpful for you.
roger say: Fahrenheit used in the USA
Celsius everywhere outside USA
Kelvin scientists and engineers

there are also Rankine and Absolute --- not used much.
rick29148 say: everybody wants their own ...................................
say: There's at least 4


I'm sure there are some other scales out there.
Some Body say: There's another, Rankine.

Celsius is a temperature scale that sets 0 at the freezing point of water and 100 at the boiling point of water.

Kelvin measures absolute temperature. 0 Kelvin is absolute zero, a state of zero thermal energy. It's defined as:
K = C + 273.15
Notice that the slope of this line is 1. So 1 degree increase in Kelvin is the same as 1 degree increase in Celsius.

Fahrenheit is a temperature scale that sets the freezing point of water at 32 and the boiling point of water at 212.

Rankine is an absolute temperature like Kelvin (0 Rankine is absolute zero). Just as Celsius and Kelvin are scaled together, Rankine and Fahrenheit are scaled together:
R = F + 459.67

Absolute temperatures are used wherever a reference to absolute zero is needed. Basically, anytime you need to multiply or divide temperatures, you have to use an absolute scale.

When adding or subtracting temperatures, you can use either absolute or nonabsolute scales. As mentioned before, they are scaled the same, so Δ1 C° = Δ1 K, and Δ1 F° = Δ1 R.

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