Record Player
Record Player Needle

 

Code Number: 9B40.85

Demo Title: Electron Microscope

Condition: Good

Principle: Electron Microscopes

Area of Study: Advanced Instruments

Equipment: 

Record of Organ Music, Turntable with Sewing Needle and Mirror Attached to the Arm, and Laser Pointer.

Procedure:

Place the record on the turntable and place the needle on the section of the record that is marked.  Turn on the laser pointer and reflect it off the arm onto a white screen or wall.  As the needle sweeps over the loud and low note vibrations on the record, you will see the beam on the wall shake and vibrate, indicating those "electrons or atomic" regions.

References:

  • J. A. Panitz, Gertrude Rempfer, "A Transmission Electron Microscope for Lecture Demonstrations", AJP, Vol. 74, #11, Nov. 2006, p. 953.
  • J. A. Panitz, "Contemporary Electronics:, A Focused Concept Laboratory", AJP, Vol. 70, #3, March 2002, p. 280.
  • Dieter G. Ast, "Optical Simulation of the Origin of Contrast in the Electron Microscope", AJP, Vol. 39, #10, Oct. 1971, p. 1164.
  • M. P. Silverman, Wayne Strange, J. C. H. Spence, "The Brightest Beam in Science: New Directions in Electron Microscopy and Interferometry", AJP, Vol. 63, #9, Sept. 1995, p. 800.
  • Mohammed Hassan, "Electron Microscopy for Attosecond Science", Physics Today, Vol. 77, #6, June 2024, p. 38.
  • Yimei Zhu and Hermann Dürr, "The Future of Electron Microscopy", Physics Today, Vol. 68, Apr. 2015, p. 32.
  • Sung Chang, "Walking a Silicon Atom Through a Graphene Landscape", Physics Today, Vol. 67, #9, Sept. 2014, p. 16.
  • Ashley G. Smart, "A New Angle on Electron Microscopy", Physics Today, Vol. 67, #5, May 2014, p. 16.
  • Barbara Goss Levi, "Focus on Improving Transmission Electron Microscopes Starts to Pay Off", Physics Today, Vol. 63, #6, June 2010, p. 15.
  • Johanna Miller, "Casimir Forces Between Solids Can Be Repulsive", Physics Today, Vol. 62, #2, Feb. 2009, p. 19.
  • Peter R. Buseck, "Electron Microscopy of Minerals", American Scientist, Vol. 71, #2, Mar/Apr. 1983, p. 175.
  • T. Kallard, "Optical Simulation of the Electron Microscope", Exploring Laser Light, p. 217 - 218.
  • Curt Suplee, "Now You See It...", Everyday Science Explained, National Geographic, p. 100 - 101.