What is the difference between Celsius and Fahrenheit?

Answer 1

Both scales are based on the freezing conditions of water, a very common and available liquid. Since water freezes and boils at temperatures that are rather easy to generate (even before modern refrigeration), it is the most likely substance on which to base a temperature scale.
On the Fahrenheit scale, the freezing point of water is 32 degrees and the boiling point is 212 degrees. Zero Fahrenheit was the coldest temperature that the German-born scientist Gabriel Daniel Fahrenheit could create with a mixture of ice and ordinary salt. He invented the mercury thermometer and introduced it and his scale in 1714 in Holland, where he lived most of his life.

Anders Celsius, a Swedish astronomer, introduced his scale is 1742. For it, he used the freezing point of water as zero and the boiling point as 100. For a long time, the Celsius scale was called "centigrade." The Greek prefix "centi" means one-hundredth and each degree Celsius is one-hundredth of the way between the temperatures of freezing and boiling for water. The Celsius temperature scale is part of the "metric system" of measurement (SI) and is used throughout the world, though not yet embraced by the American public.

Answer 2

Celsius Vs Fahrenheit

Answer 3

Celsius assumes that water freezes at 0 degrees and boils at 100 degrees, a difference of

(100 - 0) = 100 degrees



Fahrenheit assumes water freezes at 32 degrees and boils at 212 degrees, a difference of

(212 - 32) = 180 degrees



CONVERTING BETWEEN THE SCALES

The ratio 5/9 is seen in many conversion computations because it means that a change of exactly 5 degrees C equals a change of exactly 9 degrees F.


or (Celsius degree / Fahrenheit degree) = (180/100) = (18/10) = 9/5 = 1.8

So, if degrees are visualized as a length, then a Celsius degree is

9/5 = 1.8 times longer (bigger) than a Fahrenheit degree.


Conversion formulas based on this relationship are:

F = (C × 9/5) + 32

C = (F - 32) × 5/9






Alternatively:

Since -40 F = -40 C


Conversion formulas based on this relationship are:

F = ((C+40) × 9/5) - 40

and

C = ((F+40) × 5/9) - 40




ABSOLUTE TEMPERATURE SCALES

The absolute Kelvin (K) scale is identical to the Celsius scale except that it's zero point is at absolute zero (= -273.15 C), theoretically the coldest temperature in nature, and measured upwards in Celsius degrees from there. In other words, the K scale measures absolute temperature in Celsius degrees from absolute zero.


The absolute Rankine (R) scale is identical to the Fahrenheit scale except that it's zero point is at absolute zero (= -459.67 F), theoretically the coldest temperature in nature, and measured upwards in Fahrenheit degrees from there. In other words, the R scale measures absolute temperature in Fahrenheit degrees from absolute zero.

There are no negative absolute temperatures by definition.


Maybe this will help:
http://lamar.colostate.edu/~hillger/temps.htm

Answer 4

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Two different temperature scales that only cross at -40. A Celsius degree is equal to 1.8 degrees Fahrenheit. The Celsius scale is based on 0 degrees being the freezing point of water and 100 degrees being the boiling point. Who the hell knows what Fahrenheit based his scale on.

Answer 5

A degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701-1744), who first proposed a similar system in 1742. From around 1750 the scale was known as the Centigrade scale, and though it was renamed after Celsius in 1948, the older name is still in widespread use. One reason for the change was that the term centigrade was in use in continental Europe as a measure of plane angle equal to one ten-thousandth part of a right angle.

Fahrenheit is a temperature scale named after the German physicist Gabriel Fahrenheit (1686–1736), who proposed it in 1724.

In this scale, the freezing point of water is 32 degrees Fahrenheit (written "32 °F"), and the boiling point is 212 degrees, placing the boiling and melting points of water 180 degrees apart. Thus the unit of this scale, a degree Fahrenheit, is 5/9ths of a kelvin (which is a degree Celsius), and negative 40 degrees Fahrenheit is equal to negative 40 degrees Celsius.

The Celsius scale sets 0.01 °C to be at the triple point (the temperature and pressure at which three phases [gas, liquid, and solid] of that substance may coexist in thermodynamic equilibrium) of water and a degree Celsius to be 1/273.16 of the difference in temperature between the triple point of water and absolute zero. Until 1954 the scale was defined with the freezing point of water at 0 °C and the boiling point at 100 °C at standard atmospheric pressure. This definition is still a close approximation to the modern definition.

Answer 6

They have the same scale diffrence
What I mean 1 temp.diff. of Fahrenheit is 1 temp.diff. of Celsius but since the two physicsians wanted to make our life difficult they started their scales from different points..
For example:
the Fahrenheit 0 is when molecular motion ceases whereas the Celsus 0 is when water becomes ice =]

Answer 7

Fahrenheit is a scale with zero as the freezing point of salt water, and Celsius is a scale with zero as the freezing point of normal water. 32 degrees F is equal to 0 degrees C.
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32.

Answer 8

Fahrenheit set his degrees based on a circle. A circle has 360 degrees. He thought that would make the gradations too small so he used half of that 180 degrees between the freezing and boiling points of water. He then created some water/salt mixture that he considered the coldest temperature reachable and gave it a 0 on his scale. From this he could see that water freezes at 32 degrees Fahrenheit and boils 180 degrees higher at 212 degrees Farenheit.

Celsius came afterwards and gave his scale (then called centigrade) 100 gradations between the freezing and boiling points of water and used the freezing point of water as the 0 degree mark. This set 0 as freezing and 100 as boiling. A less cumbersome system than that of Fahrenheit.

So the gradations of deg F are 1.8 times that of deg C, OR
deg F = 1.8 deg C
And the offset for the freezing point is 32 degrees, So
deg F = 1.8 deg C + 32

Just reverse to solve for deg C.

Another simple way to remember (since -40 F = -40 C)

deg F to deg C
add 40, divide by 1.8, subtract 40

deg C to deg F
add 40, multiply by 1.8, subtract 40

Answer 9

Celsius is base on 100 degree increments between the freezing point of water zero and the boiling point of water 100. Fahrenheit is also based on 100 degree increments but it has 100 degrees between the freezing point of raw milk and the body temperature of the cow. Seriously.

Answer 10

9/5 +32

To get a rough idea when converting celsius to fahrenheit, multiply the the temp in C X 2 then add 30 its close enough,(exact formula is the first equation i put up)