http://www.physics.lsa.umich.edu/demolab/demo.asp?i d=518http://www.physics.ucla.edu/demoweb/demomanual/mode rn_physics/quantum_mechanics_and_atomic_physics/pho toelectric_effect.htmlhttp://buphy.bu.edu/~duffy/modern/7A10_10.html
poradna.net poradna.net
