The Three Temperature

Scales

Anders Celsius

Daniel Gabriel Fahrenheit

Lord Kelvin

•The first thermometers were called thermoscopes

•Galileo Galilei, 1593, early water thermometer

•Italian inventor Santorio Santorio was the first inventor to put numbers on thermometers

•1714, Gabriel Fahrenheit: first mercury thermometer- what we still use!

Early Thermometers

http://inventors.about.com/library/inventors/blthermometer.htm

Daniel Gabriel Fahrenheit

•German Physicist

•1709- invented alcohol thermometer

•1724, introduced the Fahrenheit temperature scale

Anders Celsius

•Celsius temperature scale aka: "centigrade" scale.

•Centigrade means divided into 100

•This scale has 100 degrees between freezing point of water and boiling point of water

Lord William Thomson Kelvin

•Invented Kelvin Scale- 1848

•Measures extremes of hot and cold

•0 degrees Kelvin= absolute zero

what do you already know on

the next diagram?•See how many we can guess, and

then try some conversions!

spare graphic for later, for now this is a

duplicate graphic

already used in brendans

smart notebook file for this lesson