Ch27CT
... field to slow it down as it . With a large voltage V, the electron will be quickly turned around. If the voltage difference across the capacitor is 6V, then the change in the PE of the electron when it moves from one plate to the other is 6eV. The electron will only make it to the other plate if its ...
... field to slow it down as it . With a large voltage V, the electron will be quickly turned around. If the voltage difference across the capacitor is 6V, then the change in the PE of the electron when it moves from one plate to the other is 6eV. The electron will only make it to the other plate if its ...
Diapositiva 1 - people@roma2
... is the mean transferred charge that must be quantized. It appears to me that the criticism is rather sophistic, because if the average is an exact integer that does imply that every measurement gives an integer. One could envisage a situation where two exactly equally likely outcomes are 0.80000 and ...
... is the mean transferred charge that must be quantized. It appears to me that the criticism is rather sophistic, because if the average is an exact integer that does imply that every measurement gives an integer. One could envisage a situation where two exactly equally likely outcomes are 0.80000 and ...
Chad Orzel, Part I
... Vast scale mismatch: How do AMO systems detect new physics? Measuring tiny effects is what we do... ...
... Vast scale mismatch: How do AMO systems detect new physics? Measuring tiny effects is what we do... ...
Renormalization
In quantum field theory, the statistical mechanics of fields, and the theory of self-similar geometric structures, renormalization is any of a collection of techniques used to treat infinities arising in calculated quantities.Renormalization specifies relationships between parameters in the theory when the parameters describing large distance scales differ from the parameters describing small distances. Physically, the pileup of contributions from an infinity of scales involved in a problem may then result in infinities. When describing space and time as a continuum, certain statistical and quantum mechanical constructions are ill defined. To define them, this continuum limit, the removal of the ""construction scaffolding"" of lattices at various scales, has to be taken carefully, as detailed below.Renormalization was first developed in quantum electrodynamics (QED) to make sense of infinite integrals in perturbation theory. Initially viewed as a suspect provisional procedure even by some of its originators, renormalization eventually was embraced as an important and self-consistent actual mechanism of scale physics in several fields of physics and mathematics. Today, the point of view has shifted: on the basis of the breakthrough renormalization group insights of Kenneth Wilson, the focus is on variation of physical quantities across contiguous scales, while distant scales are related to each other through ""effective"" descriptions. All scales are linked in a broadly systematic way, and the actual physics pertinent to each is extracted with the suitable specific computational techniques appropriate for each.