CHEM 142 Study Guide - Midterm Guide: Black-Body Radiation, Radiant Energy, Real Structure
Document Summary
Electromagnetics: electromagnetic radiation waves of the em field, propagating through space carrying electromagnetic radiant energy. Lecture 1. 1: wavelength distance between two consecutive peaks in the wave, frequency number of waves that pass a given point in space per second, energy increases with frequency, decreases with wavelength, c= , note: hz=1 s-1. This contradicted the thought that the two weren"t distinct because if they were, the radiation profile would have no max and go to infinite intensity uv catastrophe. This ultimately allowed planck to conclude energy of a bb system was. Einstein later called these units quanta, composed of n units of hv, aka photons. All of this suggested that energy had a particulate model where systems can absorb or emit n photons of energy hv: ephoton=h , e= . Wave particle duality: em radiation can be characterized in terms of wavelength, but bb radiation and atomic spectra can only be explained by invoking particle like model for em.
