Experimental Modern and Quantum Physics for Do-It-Yourself Science Enthusiasts 

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Home Book Chapters Chapter 3 - Atoms and Radioactvity diy Measurement of the Charge-to-Mass Ratio of the Electron Using “Magic Eye” Tube – Supplementary Pictures
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diy Measurement of the Charge-to-Mass Ratio of the Electron Using “Magic Eye” Tube – Supplementary Pictures

diy setup for measuring e/m using a 6AF6-G magic eye tube

Figure 54 in the book shows our setup based on a 6AF6-G “magic eye” tuning tube to measure e/m.  The pictures in this figure supplement the book’s Figure 54 to help you build your own system.   In the 6AF6, electrons produced by a thermionic cathode cause fluorescence on the tube’s anode. Applying an external magnetic field curves the path of the electrons reaching the anode’s fluorescent coating. Knowing R and the voltage applied to the tube allows one to calculate e/m.

Interesting links:

MASS OF ELECTRON APPARATUS by IEC Australia

mass_of_electron_NNHS

6AF6G Datasheet

 
 

Please visit www.prutchi.com and www.diyPhysics.com for other cutting-edge d.i.y. projects, and remember to check out our new d.i.y. Quantum Physics book:

 
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