What is Temperature?
- In its most basic form, Temperature is another way of expressing energy.
- Kelvin and Celsius are used to express temperature.
- A change in temperature of a system is the same when expressed with Kelvin or Celsius
- Kelvin temperature is a measure of the average kinetic energy of particles.
- Temperature difference determines the direction of the resultant thermal energy transfer between bodies.
Temperature and Balancing Radiation
- The resultant flow of thermal energy is always from higher temperature to lower temperature.
- Thermal energy, or heat, flows from the hotter body to the cooler body.
- Once both are equal in temperature, thermal energy will stop flowing between the bodies.
Absolute Temperature
- Absolute temperature is 0 Kelvin, or -273 degrees Celsius.
- It represents the temperature at which particles have zero kinetic energy.
- When a solid is heated, the particles gain energy and move further apart, weakening the intermolecular forces.
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