Lecture_31_PPT

Lecture_31_PPT - Chapter 19-22 Thermodynamics Temperature...

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Chapter 19-22 Thermodynamics Temperature
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Thermodynamics z Thermodynamics originates from two Greek words θερμη and δυναμι ς z θερμη ( therme ) means "heat" z δυναμι ς ( dynamis ) means "power"
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What we already know z Described by displacement, velocity, acceleration, energy, momentum, amplitude, frequency,. . etc. z Given initial parameters or boundary conditions, their physical properties can be obtained by solving mathematic equations based on Newton’s three laws.
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Heat and Energy z Thermal energy originates from the Kinetic energy of liquid or gas molecules or Vibration energy of atoms/molecules z Thermal energy is associated with an object’s temperature Animation _thermal energy
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Temperature – Definition z A “hot” object is at high Temperature z A “cold” object is at low Temperature z Bring the two in contact z They will be at a same Temperature after sufficient long time
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Thermal Contact z Two objects are in thermal contact with each other if thermal energy can be exchanged between them z The thermal contact does not have to also be physical contact – radiation or medium Animation _heat
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This note was uploaded on 01/28/2011 for the course PHYS 011 taught by Professor Nianlin during the Fall '08 term at HKUST.

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Lecture_31_PPT - Chapter 19-22 Thermodynamics Temperature...

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