User:David J Weiss/Notebook/people/weiss/Rough Draft: Difference between revisions
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Department of Physics and Astronomy, University of New Mexico, MSC07 4220, 800 Yale Blvd NE, Albuquerque, New Mexico 87131-0001 USA | Department of Physics and Astronomy, University of New Mexico, MSC07 4220, 800 Yale Blvd NE, Albuquerque, New Mexico 87131-0001 USA | ||
==Abstract== | ==Abstract== | ||
The ratio for electric charge to the mass of an electron is a fundamental concept in physics and a good experiment to be conducted by persons interested in a study of physics. With this result you can determine how much charge an electron has in relation to its mass. From this you can conclude how the electron is affected by gravity and by the electric field. To find this we use a procedure that is outlined in Professor Gold's Laboratory Manual<small><sup>1</sup></small>. This can be done with an electron gun a Helmholtz Coil and a couple of power sources. With all these things we can determine how a beam of electrons curves within a magnetic field and thus measure a radius and with some tricky manipulation figure the ratio for electric charge compared to mass for the electrons. Based upon my calculations I found that the electric charge versus the mass for an electron is approximately 2.3(.23)*10^11 coul/kg and this was off by about 30.68% and considering that the main measurement for the radii was taken by reading a ruler on the back of the electron gun I think that it is a good result. | |||
==Introduction== | ==Introduction== | ||
Revision as of 00:42, 15 November 2009
Determination of the Electrons mass versus its charge via expernmentation
David Weiss
Department of Physics and Astronomy, University of New Mexico, MSC07 4220, 800 Yale Blvd NE, Albuquerque, New Mexico 87131-0001 USA
Abstract
The ratio for electric charge to the mass of an electron is a fundamental concept in physics and a good experiment to be conducted by persons interested in a study of physics. With this result you can determine how much charge an electron has in relation to its mass. From this you can conclude how the electron is affected by gravity and by the electric field. To find this we use a procedure that is outlined in Professor Gold's Laboratory Manual1. This can be done with an electron gun a Helmholtz Coil and a couple of power sources. With all these things we can determine how a beam of electrons curves within a magnetic field and thus measure a radius and with some tricky manipulation figure the ratio for electric charge compared to mass for the electrons. Based upon my calculations I found that the electric charge versus the mass for an electron is approximately 2.3(.23)*10^11 coul/kg and this was off by about 30.68% and considering that the main measurement for the radii was taken by reading a ruler on the back of the electron gun I think that it is a good result.
