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country bumpkin

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Converting between Fahrenheit and Celsius temperature scales

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.

In the formulas below, / means to divide, * means to multiply, - means subtract, + means to add and = is equal. Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit

To convert a Fahrenheit temperature into Celsius:

Tc = (5/9)*(Tf-32)

For example, to convert a Fahrenheit temperature of 98.6°F 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°C.

To convert a Celsius temperature into degrees Fahrenheit:

Tf = ((9/5)*Tc)+32

For example, to convert a Celsius temperature of 100 into degrees Fahrenheit, first multiply the Celsius temperature reading by nine-fifths to get 180. Then add 32 to 180 and get 212°F.

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 Andres 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.

Temperature is a measure of molecular motion

http://usatoday30.usatoday.com/weather/wtempcf.htm

http://www.ehow.com/about_6765673_fahrenheit-celsius-temperatures-compared.html