Light and matter lesson 6
6OUTCOME
By the end of the lesson you will be able to describe the evidence that correlated our understanding that all matter can act as a wave and use de Broglie's equation to determine the wavelength of matter
This video shows you an Electron Diffraction tube which shows a beam of electrons diffracting through the gaps between carbon atoms in Graphite.
De Broglie showed that all matter with momentum had a wavelength and that this wavelength could be used to explain the energy levels of electrons in an atom as harmonic resonances of the electrons
LEARNING TASKS
Exercise 11.2
DPQs 2.2.1
Explain the significance of this image. What does it tell you about..
a) the wavelength of the electrons and X-rays
b) the momentum of the electrons and X-rays
c) the energy of the electrons and X-rays