In my opinion, asking questions is naturally scientific. Claiming a question is "not scientific" sounds ignorant.
Field is not a concept, it's a label, it's a name given to something to explain its effects and not itself. The "field" always depends on the source and can never be manipulated...
Holy cow!... that works. thanks... I am not %100 clear though on why x limit should be from 0,+∞ but the fact that one of the inegration limits should be set to -∞,+∞ and that will give zero, makes sense.
Thanks
The distribution function is in the velocity space and pressure tensor is the second moment of the distribution function. and (V V) in the integral gives you dyadic. I am just wondering if we are on the same page.
1. Does anyone know why for an isotropic distribution function, pressure tensor reduces to a scalar pressure?
For instance, for a Maxwellian distribution
P=A ∫ vx vy exp-(vx2 + vy2 + vz2) dvx dvy dvz
is not zero.
I think everybody should realize how bogus some of the authors are. Google...