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NOTE: This is a base 2 conversion (binary) and does not follow the SI standards. Use this only for things such as computer memory and hard disk sizes.
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Fahrenheit
& Celcius Conversion
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To convert from Celsius to Fahrenheit:
[(9/5)*Tc]+32 where Tc is the temperature in Celsius
or
[1.8*Tc]+32 where Tc is the temperature in Celsius
or
Tf = ((9/5)*Tc)+32
For example, to convert a Celsius temperature of 100 degrees into degrees Fahrenheit, first multiply the Celsius temperature reading by nine-fifths to get 180.
Then add 32 to 180 and get 212 degrees Fahrenheit.
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To convert from Fahrenheit to Celsius:
(Tf-32)/(9/5) where Tf is the temperature in Fahrenheit
or
(Tf-32)/1.8 where Tf is the temperature in Fahrenheit
or
Tc = (5/9)*(Tf-32)
For example, to convert a Fahrenheit temperature of 98.6 degrees into degrees Celsius first subtract 32 from the Fahrenheit temperature to get 66.6.
Then you multiply 66.6 by five-ninths to get 37 degrees Celsius.
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Instructions for the form:
Fill in the approperate amount for the correct temperature, and then select "Convert". It will return the amount in the other temperature.
NOTE: You can use numbers (0-9), dots (.) to indicate decimals and the minus-sign (-) to indicate temperature below zero.
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Quickly
convert between Fahrenheit and Celcius temperatures.
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The chart below will help you quickly make rough conversions between the Fahrenheit and Celsius temperature scales.
To make more exact conversions, use the formulas below the chart
The Celsius temperature scale is still sometimes referred to as the "centigrade" scale. Centigrade means "consisting of or divided into 100 degrees.".
The Swedish Astronomer Anders Celsius (1701-1744) developed the centigrade scales for scientific purposes.
It has 100 degrees between the freezing point (0 C) and boiling point (100 C) of pure water at sea level air pressure.
An international conference on weights and measures voted to name the centigrade scale after its inventor in 1948.
The Kelvin and Rankine scales.
Scientists use the Kelvin scale, which is based on the Celsius scale, but has no negative numbers.
Zero on the Kelvin scale is considered the be absolute zero; that is, the point at which all molecular motion stops.
To convert a temperature reading into degrees Kelvin, simply add 273.16 to the Celsius temperature. This explains why in scientific temperatures you'll see references to temperatures on Earth in the 300-degree range.
The absolute zero version of the Fahrenheit scale is the Rankine scale. Add 460
degrees to Fahrenheit temperatures to obtain the Rankine temperature.
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| To calculate the wind chill factor, enter the wind speed and air temperature in the top two boxes, then click the "Calculate Wind Chill!" button...
|
| Wind
Speed
km/h
|
Air Temperature
(Degrees Celcius)
|
|
1,7
|
-1,1
|
-3,9
|
-6,7
|
-9,4
|
-12,2
|
-15
|
-17,8
|
-20,6
|
-23,3
|
-26,1
|
-28,9
|
-31,7
|
-34,4
|
-37,2
|
-40,0
|
-42,8
|
|---|
|
8
|
0,6
|
-3,9
|
-7,2
|
-10,6
|
-13,9
|
-17,2
|
-20,6
|
-23,9
|
-26,7
|
-30
|
-33,3
|
-36,7
|
-40
|
-43,3
|
-46,7
|
-49,4
|
-52,8
|
|
16,1
|
-2,8
|
-6,1
|
-9,4
|
-12,8
|
-16,1
|
-20
|
-23,3
|
-26,7
|
-30
|
-33,3
|
-37,2
|
-40,6
|
-43,9
|
-47,2
|
-50,6
|
-54,4
|
-57,8
|
|
24,1
|
-3,9
|
-7,2
|
-10,6
|
-14,4
|
-17,8
|
-21,7
|
-25
|
-28,3
|
-32,2
|
-35,6
|
-39,4
|
-42,8
|
-46,1
|
-50
|
-53,3
|
-57,2
|
-60,6
|
|
32,2
|
-4,4
|
-8,3
|
-11,7
|
-15,6
|
-18,9
|
-22,8
|
26,1
|
-30
|
-33,9
|
-37,2
|
-41,1
|
-44,4
|
-48,3
|
-51,7
|
-55,6
|
-58,9
|
-62,8
|
|
40,2
|
-5
|
-8,9
|
-12,8
|
-16,1
|
-20
|
-23,9
|
-27,2
|
-31,1
|
-35
|
-38,3
|
-42,2
|
-46,1
|
-50
|
-53,3
|
-57,2
|
-61,1
|
-64,4
|
|
48,3
|
-5,6
|
-9,4
|
-13,3
|
-17,2
|
-20,6
|
-24,4
|
-28,3
|
-32,3
|
-36,1
|
-39,4
|
-43,3
|
-47,2
|
-51,1
|
-55
|
-58,3
|
-62,2
|
-66,1
|
|
56,3
|
-6,1
|
-10
|
-13,9
|
-17,8
|
-21,7
|
-25,6
|
-29,4
|
-32,8
|
-36,7
|
-40,6
|
-44,4
|
-48,3
|
-52,2
|
-56,1
|
-60
|
-63,3
|
-67,2
|
|
64,4
|
-6,7
|
-10,6
|
-14,4
|
-18,3
|
-22,2
|
-26,1
|
-30
|
-33,9
|
-37,8
|
-41,7
|
-45,6
|
-49,4
|
-53,3
|
-57,2
|
-61,1
|
-64,4
|
-68,3
|
|
LITTLE
DANGER
|
INCREASING
DANGER
|
GREAT
DANGER
|
40 km/h = 11 m/s
The wind
chill factor, which only affects humans and animals, causes the air to
feel colder than it really is. This helps us to understand how cold it
feels outside! Moving air carries heat away from the body more effectively than
air that is not moving. If there is no wind, the heat radiating from a person's
body will stay near the body and warm the air around it. Therefore, the wind
chill is simply a means of describing the effect of the movement of air on the
heat loss of a person's body.
The Wind
Chill Index is based on an equation first proposed in 1939 by Paul Siple,
a famous geographer, polar explorer, and an authority on the Antarctic. He and
fellow Antarctic explorer Charles F. Passel conducted experiments on the amount
of time it took for water to freeze in a plastic cylinder while
exposed to the elements. They discovered that the time it took for the water
to
freeze depended on the initial temperature of the water, the outside air
temperature, and the speed of the wind.
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