Noun
The word is derived from momentum
of Momentum
Source: Webster's dictionaryAdding together all of these plane waves comes at a cost, namely the momentum has become less precise, having become a mixture of waves of many different momenta. Source: Internet
All protons in a complete proton shell have total angular momentum zero, since their angular momenta cancel each other; The same is true for neutrons. Source: Internet
Albert Einstein in 1905, attributed "particle-like" and discrete exchanges of momenta and energy, characteristic of "field quanta", to the electromagnetic field. Source: Internet
By measuring the scattered photons' energy and reversing the magnetisation of the sample, two different Compton profiles are generated (one for spin up momenta and one for spin down momenta). Source: Internet
A vertex diagram represents the annihilation of one electron and the creation of another together with the absorption or creation of a photon, each having specified energies and momenta. Source: Internet
In classical dynamics, a snapshot of the instantaneous momenta of a large number of particles at equilibrium is sufficient to find the average kinetic energy per degree of freedom which is proportional to the temperature. Source: Internet