Unformatted text preview: mber of experiments showed
that classical mechanics was not a good model
for processes on the very small scale. Among
these experiments were the following………. EE 332 Spring 2013 Particle Nature of Light
• • • Light passed through two slits clearly shows an
interference pattern. This means that light must
be treated as a wave.
However, light hitting a metal surface causes the
ejection of an electron, which indicates a particle
nature for light.
Further, it was found that the energy of the
ejected electrons depends only on the
frequency of the incident light and not the
intensity of light. Thus there seems to be duality ! EE 332 Spring 2013 Wave Nature of Electrons
• Electrons passed through two slits clearly show
an interference pattern but they had clearly been
found to be particles. Duality again ! EE 332 Spring 2013 Quantized Orbitals for Electrons
• • In 1911, Rutherford established that atoms were
made of ‘solid’ core of protons and neutron
surrounded by a much larger shell of electrons.
However, classic electromagnetism combined
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- Spring '09