A magic eye is a simplistic triode tube that was used as a tuning indicator in radio receivers around the time of the World-War II. It has a bowl shaped anode coated with a phosphorescent material that produces a green glow when electrons strike on it. In this experiment, we measure the radius of curvature of the path of electrons in a magnetic field using a freeware, open-source image processor ImageJ, and calculate the charge-to-mass ratio of the electron.
|Sample Results||Image processing in ImageJ
A graph for finding the e/m ratio
|Version||28 October 2015, 2015-v1|
Further Readings and References
- imageJ_Link ImageJ, U. S. National Institutes of Health, Bethesda, Maryland, USA , W.S. Rasband , (1997-2012).
- Error Analysis An Introduction to Error Analysis, University Science Books , John R. Taylor Ch. 8 , (1997).
- Quantum Physics Exploring Quantum Physics through Hands-on Projects, John Wiley, Inc. , D. Prutchi, and S. Prutch 77 , (2003).