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THE ATOMIC NATURE OF MATTER
The Distribution of Velocities
146 other sections not shown
absorbed absorption accelerated alpha particle angle angular momentum Appendix 9 atomic number average beam beta beta particles Bohr bombardment charge cloud chamber cm/sec collision constant cosmic rays cross section crystal curve decay determined diagram diffraction direction disintegration distance effect electromagnetic electron electron volts elements emission emitted energy levels equal equation experimental experiments fission force frequency gamma rays helium hydrogen hydrogen atom increases intensity ionization ions isotopes kinetic energy light lines magnetic field mass matter waves measured mesons metal molecules motion moving negative neutrino neutrons nuclear nucleus observed obtained occur orbit pair pair production photoelectrons photographic plane plate positive positron potential energy produced protons quantum number radiation radioactive radium reaction reflection region relative rotational scattering shown in Fig shows space spectra spectrum speed spin temperature theory tion tube uranium valence velocity voltage volts wave mechanics wave number wavelength X-rays zero