IT has recently been suggested by Bondi and Ly ttleton1,2that 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 fact, Piccard and Kessler3attempted ...
neutron是中子，proton是质子，electron是电子。中子不带电，质子带正电，电子带负电。中子与质子通过强相互作用结合，形成原子核，电子在核外运动
WE are gratified that attempts to test the charge-excess hypothesis have begun so soon, but we find the meaning of Hillas and Cranshaw's experiment extremely obscure and we are not able to see that the conclusion claimed follows validly....
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...
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!
- Size and Structure of an Atom Atom Diameter = 10 -10 m Nucleus Diameter = 10 -15 m + + + + + ––– Proton Neutron Electron Units of Elementary Charge + – + + + + + + + + ––––––– +e -e +2e -2e +3e -3e +2.5e -.5e } } Allowed in normal matter ...
The lightest stable subatomic particle known, the electron carries a negative charge of 1.602176634 × 10−19 coulomb, which is considered the basic unit of electric charge. The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton. An elect...
质子proton: positively charged atomic particles 中子neutron: uncharged atomic particles 质子和中子所在的区域是原子的中心区域,称为原子核 (neucleus) Points to Note: Same number of electrons and protons -> holds electronsin orbitand makes the atomoverall electrically NEUTRAL ...
charge. Electrons spin about an atom's nucleus in orbits called shells. Electrons behave both as particles and as waves, and their motion generates electric and magnetic fields. Though the electron is the lightest subatomic particle, its charge is as great as that of a proton. See more at...
英汉-汉英词典 n. 近义、反义、联想词 近义词 n. lepton 联想词 proton质;photon光;ion离;protons质;atom原;neutron中;photons光;ionization离 化, 离;excitation刺激;particle颗粒;anode阳极; 词组| 习惯用语 electron microscope 显微镜 electron microscopy ...