7A60.10 • X-Ray and Electron Diffraction: Electron Diffraction

Location: Floor Demo

Photo Shows the Demonstration Used by the University of Texas at Austin.

Concepts conveyed:

• Show how input voltage correlates to the momentum of the particle and the deBroglie wavelength.
• See how the diffraction pattern changes with input voltage.

Instructions and Notes:

• Turn on the power supply.
• Alter the voltage to see how the concentric rings change in size.
• Do NOT increase the voltage past the line indicated on the gauge.
• This demo can also be used in conjunction with a magnet to show how the beam is affected by a magnetic field.

Last updated on June 22, 2026