Description:
Fundamental and philosophical physics. (Moderated)
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On Maxwell's Equations and Gravitation[Part II]
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This is with reference to a previous posting "On Maxwell's equations
and Gravitation"[Dated:25th March 2010]Link:[link]
group/sci.physics.foundations/ browse_thread/thread/100f90082 71a9fd8?
hl=en
Lets examine a typical GR metric:
ds^2=g(00)dt^2-g(11)dx^2-g(22) dy^2-g(33)dz^2... more »
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General relativity question
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Hi guys, hope you are all well.
...in the various sci.phy.res threads was actually how to view simple GR
spacetime, like, well here on earth for example.
Its important to realise that I am NOT talking about corrections top
Newtonian gravity. Let us consider ourselves, sat in a chair on the... more »
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Significance of zero eigenvalues??
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If the state |a> of a system (at some instant) is an eigenvector, with the non-zero eigenvalue "a", of some particular observable property (whose operator corresponding to the measurement of that property is denoted by A), then if A operates on |a>, the result of that operation is the vector a|a>, which corresponds to the same state existing before... more »
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Does a meaningful system always perform an energy conversion?
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Using Lagrange and Hamiltonian mechanics we can describe a system as a
conversion between potential and kinetic energy. Does this cover all
meaningful systems? In other words, can there be a system, that has
for example moving parts, and does not convert any energy?
I think the conversion can be extended beyond kinetic and potential... more »
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Two-state, two-particle QM question
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I'm trying to better understand how two particles are handled in QM, in the simplist case where each particle (when isolated) is considered to have only a 2-dimensional state space. (I.e., when their spatial positions and momenta are unimportant, and only their (+-1/2) spins are important).... more »
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From Orthogonal to Non-Orthogonal Systems
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Let's consider a 2D orthogonal [x-y] system having origin at O in the
flat space context..A is a point on the x-axis and B is another on
the -axis.ABC is a right angled triangle with
AB^2=OA^2+OB^2
We now transform to a non-orthogonal system in the same manifold[flat
space]We make the angle between the axes x' and y' =theta not equal to... more »
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From the Orthogonal to the Non-orthogonal System
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Let's consider a 2D orthogonal [x-y] system having origin at O in the
flat space context..'A' is a point on the x-axis and 'B' is another
on the y-axis.ABC is a right angled triangle with
AB^2=OA^2+OB^2
We now transform to a non-orthogonal system in the same manifold[flat... more »
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