https://sciencing.com/calculate-kpa-5373938.html
How to calculate force per cross-sectional area
Engineers often measure or calculate pressure in metric units. The unit for pressure is the Pascal, or one newton of force per square meter of area. Converting pressure to kiloPascals (kPa), which equals 1,000 Pascals, will abbreviate large pressure values. You must only consider the amount of force acting perpendicular to the surface. The kPa is also the unit of normal, or axial, stress and shear, or tangential stress.
Force per cross-sectional area from molecules to muscles: a general property of biological motors
so....
Imaginary potential and entropic force in non-commutative plasma
non-commutativity reduces quarkonia dissociation.
Missing the point in noncommutative geometry
That is, finally, the question of the meaning of phenomenal cross-sections—so of space—in NCFT narrows to the question of the significance of the commuting coordinate arguments of the 2-point functions.
if one adopts an ontology in which the algebra is fundamental, for as we noted then neither points nor regions have fundamental significance.
2-point functions’: squared, these represent the probability that, left to itself, a quantum at x in space and time would be ‘found’ at y, the simplest kind of ‘scattering’.Footnote 24 These, along with interaction terms, are the ingredients of the Feynman method for calculating cross-sections, so they can be taken as giving the empirical spatial content of a QFT—and hence of NCFT. The 2-point functions make the problem of giving a spatial interpretation very clear, for they are functions of x and y, coordinates in phenomenal, commuting spacetime—and so have no immediate significance in NCFT, in which the coordinates cannot be ordinary number-valued, since they don’t commute!
No comments:
Post a Comment