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What is the First Law of Thermodynamics?



The Royal Institution

With the a little hydrogen, a few balloons and a couple of makeshift rockets, Valeska Ting launches into an explanation of what the first law of thermodynamics is, and why it matters to our lives.
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We’ve all heard the rule that states that ‘energy cannot be created or destroyed’, or ‘energy is always conserved’. But what does that mean? Chemical engineer Valeska Ting explains.

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40 thoughts on “What is the First Law of Thermodynamics?
  1. Many ancient philosophers state the germ of the law of the conservation of matter/mass/energy: Anaxagoras, Anaximenes, Parmenides, Heraclitus, Empedocles, Lucretius, and others. They state the principle with such beauty, simplicity and logic I think they would be a great teaching device for physicists. Students would get the gist before going into details.

  2. in our physics class work is defined as being done on the system so that when work is done by the system it loses that energy so it's negative

  3. Rockets is the old way. Look up electro gravitics and the jhon searl motor. This is our future.

    Oh by the what what they learn about thermodynamics with the added idea thay prepetual motion is impossible.

    If you look at how stars and planets orbits. And the electrons around atoms.

    This claerly makes it ridiculus to claim that prepetual motion is impossible.

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