CHEM 112 Lecture Notes - Lecture 3: Gas Constant, Black-Body Radiation, Photon
20 Sep 2016
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Lecture 3 - unit 2 electromagnetic radiation and quantum theory. M = density x (rt/p); r is ideal gas constant. Classical mechanics applies to medium sized objects: from molecules to planets. Quantum mechanics describes behaviour of small objects ( electrons, neutrons, protons, photons) Quantum mechanics exists in particles particles and/or waves (waves are more important) change in energy are continuous energy is transferred in discrete units (quanta) can know position and velocity exactly cannot know position and velocity exactly. Chemistry is understanding electrons; electrons act as glue to bond nuclei together, creating a chemical bond. Paul dirac: recognized chemistry depends on electrons by determining an equation relative to what electrons do; equation is too dif cult to solve Oscillation of electric and magnetic elds through space and matter. Perpendicular to each other and in phase. Wavelengths : has unit of distance, distant between two consecutive crests (angstrom, 1 = 10^-10 m)
