Thermometers - Scales e.t.c
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Temperature:

• A measure of the hotness of a body. The mean kinetic energy of its particles.

Internal Energy:

• The energy contained in a body due to the potential energy and kinetic energy of its particles. It is increased if work is done on it or energy is transfered to the body.

Heat

• Energy transferred due to a difference in temperature.

Thermal Dynamic Scale:

• Upper fixed point = triple point of water = 273.16K

• Lower fixed point = absolute zero = 0K
• Measure in Kelvins - symbol K

Triple Point of Water:

• The temperature at which water can exist in all three states (solid, liquid and gas) at the same time in equilibrium. (273.16K)

Centigrade Scale:

• Upper fixed point = boiling point of water = 100°C

• Lower fixed point = ice point of water = 0°C
• Measured in °C

Farenheit Scale:

• Upper fixed point =96°F

• Lower fixed point = 32°F
• Measured in °F

• Converting Kelvins into °C: Minus 273. (for the other way round do the opposite i.e. +273). The Celcius scale is derived from the absolute scale and uses the same fixed points.

• A thermometric property is a property of a thermometer that varies continuously with temperature.

Other Notes in this Category

1. First Law of Thermodynamics, Adiabatic and Isothermal Changes
2. Thermometers - Scales e.t.c

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