Hi,
I have 4 non-planar points
P1 = ( x1 , y1 , z1 )
P2 = ( x2 , y2 , z2 )
P3 = ( x3 , y3 , z3 )
P4 = ( x4 , y4 , z4 )
what is the coordinate of center of mass of
the object ( tetrahedron ) whose vertices
are P1 P2 P3 and P4? ( uniform density )
Thanks
Hi again,
I think I found something...
at wikipedia : http://en.wikipedia.org/wiki/Path_integral_formulation
--> given by the time integral of the "Lagrangian" along the corresponding path
also another wiki article has information about QED Lagrangian.
"Quantum electrodynamic Lagrangian" ...
Feynman says in his lecture that
P(e1,e2) is almost equivalent to E(e1,e2)... where e1 and e2 are event1 and event2
in fact P(e1,e2) is E(e1,e2) where rest mass is set to zero.
But he doesn't give the open formula for E(e1,e2)
I would appreciate very much if someone could give me the open...
Hi,
yes, yes, I know that E and P are functions that take a couple of positions and time, one for location 1 , one for location 2, and give out a complex number which is the probability amplitute. I know about probability amplitutes.
path-Integrating complex functions E and P gives the...
Hello all...
I confess, I didn't make much googling about this, so if this question is
already answered :) just show me the link to answer...
In his famous video lectures about quantum electro dynamics,
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Hello,
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Hello,
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