This preview shows page 1. Sign up to view the full content.
Unformatted text preview: mechanics implies that the
electron must continue to lose energy
(through radiation of electromagnetic waves)
and collapse to the center of the atom. Clearly
this was not happening. EE 332 Spring 2013 Quantized Orbitals for Electrons
• Hydrogen atoms (and all other atoms and
molecules) were found to give off light at welldefined frequencies. This did not follow any known
model of the nature of physical matter. EE 332 Spring 2013 Then some new models were developed that
explained these phenomena EE 332 Spring 2013 History of New Physical Models
• • • 1901 Planck assumed that processes occurred in
steps, ‘Quanta’, and thus was able to accurately
predict Blackbody radiation.
1905 – Einstein successfully explained the
photoelectric effect using a particle nature for
1913 – Bohr explained the spectra of the
Hydrogen atom by assuming a quantized nature
for the orbit of electrons around atoms EE 332 Spring 2013 History of Physical Models
• 1924 – Pauli showed that some ‘particles’ are
such that they cannot occupy the same location
View Full Document
This document was uploaded on 02/18/2014.
- Spring '09