The Restless Universe

a-particles actually angular momentum apparatus atom of electricity atomic number atomic weight ball beam body Bohr's theory Broglie called chemical collision colour copper cubic centimetre definite deviations direction earth effect electrical tension electromagnetic electrons elements emitted equal exactly example experiments fact Film force frequency Geissler tube give helium Hence hydrogen atom idea ions isotope kind kinetic theory laws layer light-waves magnetic field mass matter means metal molecular motion moving negative neutron nodal lines nuclear charge nucleus number of molecules observations obtain orbit ordinary oxygen periodic table phenomena physicists physics plane Plate positive positron possible principal quantum proton quantity quantum number radiation radioactive radius result rotation scattering shell shows simple harmonic waves slit space spectra spectral lines spectrum spin substances temperature theory of relativity tube velocity of light vibration wave mechanics wave theory wave-length whole number Wilson chamber X-rays Zeeman effect