Who cares how big a neutrino is?
The actual size of an electron-neutrino

Who cares how big a neutrino is?

v. 2 n. 34

Unlike the other elementary particles, neutrinos are at the human scale -- about the size of a large grain of sand, regarding a certain approach. For something so close to nothing, this is something to think about -- because it demonstrates how low in density it is and why it is so difficult to stop a neutrino. If you want to stop something -- know it's there -- it helps to know how big it is.

For comparison, the de Broglie wavelength of a proton is about

λ = h/mv = 6.625x10^-34 J-s / (938 MeV/c^2 v) with appropriate conversion factors. While the de Broglie wavelength of the electron-neutrino is from

λ = h/mv = 6.625x10^-34 J-s / (0.00120 eV/c^2 v), v→c, (left-handed)

and where m = 0.003 eV/c^2 (right-handed), *

so that the effective size of the common electron-neutrino is about 12 orders of magnitude larger than than that of the proton, and of the human scale, emphasizing its reality, even though it is next to impossible to detect one.

But knowing its wavelength, or frequency, should make it that much easier to detect -- left or right-handed -- by interdicting it with a particle beam of similar wavelength. Similarly for higher neutrino generations.

_______

* (3) Why it might be difficult to detect right-handed neutrinos | LinkedIn

Cover image caption: The actual size of an electron-neutrino

Giuseppe Bellotti

Professionista nel settore Ricerca

2 年

Very interesting!! According to Electromagnetic Atomic Theory and Complete Relativity we can consider electron the fundamental particle of the Universe that we percieve in normal conditions of our conscious life I proposed this Universe be in correlation with the gamma and X rays But Cosmos is formed by the superimposition of some different Universes each of them formed by some different kind of e.m. standing waves studied by the fundamental trigonometric formula sin( kr + ot )/r = sin( kr )/r * cos( ot ) + cos( kr )/r * sin( ot ) that can be considered a good math model of the creation/annihilation of an electron/positron pair by a gamma ray of 1.022 MeV But the above Trigonometric formula can consider some different kind of progressive Electromagnetic waves Then As electron is the fundamental particle of the Universe that we percieve can neutrino be the fundamental particle of the Universe of light? Being the Universe of light the Universe where live and we could detect our souls and other spirits The Universe where our spirits will live after our death In order to discuss my proposal for a new foundation of Fundamental Physics the question proposed in the actual post is fascinating, attractive Thank you, Warren Frisina!

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