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Thread: Non-invariant laws in Physics

  1. #1 Non-invariant laws in Physics 
    Forum Bachelors Degree martillo's Avatar
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    I would like to know about recognized non-invariant laws in Physics.
    I'm asking for physics laws or relations non-invariant under relativistic Lorentz Transformations.
    Please tell me if you know some.


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  3. #2  
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    Matter contracts in the direction of its motion at a rate approximately proportional to its velocity?


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  4. #3  
    Forum Isotope Zelos's Avatar
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    hahahahahaha you are asking about relativity martillo? hahahahaha
    hylarius
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  5. #4  
    Forum Junior Vroomfondel's Avatar
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    Proper time, space time intervals, dot products of four velocity/ momentum, force, acceleration, work, power, torque, and maybe angular velocity are the only things that i can think of that ARE invarient under lorentzian transforms. everything else varies. (i think)
    I demand that my name may or may not be vroomfondel!
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  6. #5  
    Forum Isotope Zelos's Avatar
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    4-velocity changes, but the (4-velocity)² doesnt
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

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  7. #6  
    Forum Junior Vroomfondel's Avatar
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    actually, (4-velocity)<sup>2</sup> does change. The dot product of two 4-velocity vectors is their product times the minkowski metric. That means that (4-velocity)*(4-velocity)*n<sub>ab</sub> is what is actually invariant. And since 4-momentum is m(4-velocity), the dot product of 2 4-momentum vectors is m<sup>2</sup>(4-velocity)*(4-velocity)*n<sub>ab</sub>, which is also invarient
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  8. #7  
    Forum Isotope Zelos's Avatar
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    yes ure right, my bad
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

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