CAN SOMEONE PLEASE HELP ME IN DESCRIBING THESE DOTPOINTS
– qualitative effect of wavelength, distance of screen and slit separation on interference patterns
• Interpret electron diffraction patterns as evidence for the wave-like nature of matter
• explain the production of atomic absorption and emission spectra, including those from metal vapour lamps
• analyse the absorption of photons by atoms, not including their bombardment by electrons, in terms of:
– the change in energy levels of the atom due to electrons changing state
– the frequency and wavelength of emitted photons, E = hf = hc/λ
• describe the quantised states of the atom in terms of electrons forming standing waves, recognising this as evidence of the dual nature of matter