7 Modern physics# This chapter covers many demonstrations in the field of modern physics. 7A quantum effects 7A50 Wave Mechanics 01 deBroglie Applied to Bohr 01 deBroglie Applied to Bohr 02 Tunneling 7A60 X-ray and Electron Diffraction 01 Bragg Scattering 7B atomic physics 7B10 Spectra 01 Balmer Series 7B50 Atomic Models 01 deBroglie Applied to Bohr 7D nuclear physics 7E elementary particles 7F relativity 7F10 Relativity 01 E = mc^2 (Einstein)