A. S. Eddington reached the conclusion that the value of the physical constant ch/2蟺eis given by the integer 136. His theory reduces the evaluation of this constant essentially to the counting up of symmetrical elements in a square array. The numbers of such elements in arrays arising in ...
The UW Penning trap mass spectrometer has been used to improve the values for the electron's atomic mass and the proton-electron mass ratio. The cyclotron frequency of small clouds of /spl les/15 electrons is compared with the cyclotron frequency of a single trapped carbon ion (C/sup 6+/...
Identify and describe protons, neutrons and electrons in terms of their relative charges and relative masses. Describe the distribution of mass and charges within an atom. Deduce the numbers of protons, neutrons and electrons present in both atoms and ions given proton and nucleon numbers. ...
ON THE RATIO OF THE MASSES OF THE NUCLEON AND THE ELECTRON AND ON THE EXISTENCE OF NEW ELEMENTARY PARTICLES WITH CONSIDERABLE MASSES 来自 osti.gov 喜欢 0 阅读量: 8 作者:Kalitsin,N St 关键词:physics elementary particles and radiations bosons electrons elementary particles equations mass mesons ...
The precision measurements of cold molecules are expected to give insights into fundamental physics. We use a rovibrationally pure sample of ultracold KRb molecules to improve the measurement on the stability of electron-to-proton mass ratio ($\\\mu = \\\frac{m_{m e}}{M_{m p}}$). The...
On a possible variation of the proton-to-electron mass ratio: H2 spectra in the line of sight of high-redshift quasars and in the laboratoryOn a possible variation of the proton-to-electron mass ratio: H2 spectra in the line of sight of high-redshift quasars and in the laboratoryExperim...
Atom (原子)被认为是the smallest part of an element that has the properties of that element,它自身又由proton (质子), neutron (中子)和electron (电子)组成。虽然electron的质量仅为proton or neutron的1/1836,但它在许多方面(e.g. ionisation energy, chemical bond, etc. )发挥重要作用!
The electrochemical behavior of CAP was studied on a MIP modified GCE, in an aqueous solution at pH 3.0. The electron transfer coefficient (α) was determined for the CAP drug, using electrochemical approaches. The prepared CAP-MIP was also used as a modifier in a CPE to design a ...
it will manifest as a sunspot-maximum-correlated increase in proton density and positron fraction, both of which are measureable in earth’s protonosphere (above hydrogen shell) by using AMS-0.2 and the sunspot-maximum-correlated increase in muon density and electron density which are both measura...
IT has recently been suggested by Bondi and Ly ttleton1,2 that the magnitudes of the electric charges on the proton and electron may differ by a little more than one part in 1018, in which case electrostatic forces would cause the universe to expand. In