First law of thermodynamics | Wikipedia audio article
Channel: wikipedia tts
Date: 24/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/First_law_of_thermodynamics


00:00:52 1 History
00:02:20 1.1 Original statements: the "thermodynamic approach"
00:04:54 1.2 Conceptual revision: the "mechanical approach"
00:05:11 2 Conceptually revised statement, according to the mechanical approach
00:07:58 3 Description
00:10:26 3.1 Cyclic processes
00:10:35 3.2 Sign conventions
00:11:58 4 Various statements of the law for closed systems
00:16:51 5 Evidence for the first law of thermodynamics for closed systems
00:18:29 5.1 Adiabatic processes
00:26:04 5.2 Adynamic processes
00:27:06 5.3 General case for reversible processes
00:41:06 5.4 General case for irreversible processes
00:43:34 5.5 Overview of the weight of evidence for the law
00:47:32 6 State functional formulation for infinitesimal processes
00:51:13 7 Spatially inhomogeneous systems
00:52:04 8 First law of thermodynamics for open systems
00:54:29 8.1 Internal energy for an open system
01:00:21 8.2 Process of transfer of matter between an open system and its surroundings
01:05:17 8.3 Open system with multiple contacts
01:06:30 8.3.1 Combination of first and second laws
01:10:24 8.4 Non-equilibrium transfers
01:12:44 9 See also
01:15:58 10 Remarks
01:20:24 11 References
01:24:50 11.1 Cited sources
01:26:31 12 Further reading



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SUMMARY
=======
The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed. The first law is often formulated

  
    
      
        Δ
        U
        =
        Q
        −
        W
        .
      
    
    {\displaystyle \Delta U=Q-W.}
  It states that the change in the internal energy ΔU of a closed system is equal to the amount of heat Q supplied to the system, minus the amount of work W done by the system on its surroundings. An equivalent statement is that perpetual motion machines of the first kind are impossible.