User:Darrell Bonn/Notebook/307L Lab book/lab 2 e over m summary

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== Electron Ratio of Charge to Mass Measurement ==
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== e/m ==
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Lab Partner:  Boleszek
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Lab Partner:  Boleszek <br>
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Lab Notes: [http://openwetware.org/wiki/User:Darrell_Bonn/Notebook/307L_Lab_book/lab_2_e_over_m|Here]
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== Purpose ==
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== Purpose and Process ==
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The purpose of this lab was to measure the electon charge to mass ratio: e/m. The procedure is fairly straight forward. Utilizing the e/m device, an electron beam is manufatcured and accelerated into an evacuated tube. A magnetic field is placed perpendicular to the beam path and the path curvature is then measured. By accurately measuring the magnetic field strength and the initial velocity of the electrons and the curvature of the beam the charge to mass ratio is simple to compute.
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== Data and Calculations ==
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Complete notes on our data acquisition can be found in our lab manual: [[http://openwetware.org/wiki/User:Darrell_Bonn/Notebook/307L_Lab_book/lab_2_e_over_m|Here]]
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== Procedures ==
 
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== Calculations ==
 
== Summary and Comments ==
== Summary and Comments ==

Revision as of 13:50, 24 November 2008

Contents

e/m

Lab Partner: Boleszek

Purpose and Process

The purpose of this lab was to measure the electon charge to mass ratio: e/m. The procedure is fairly straight forward. Utilizing the e/m device, an electron beam is manufatcured and accelerated into an evacuated tube. A magnetic field is placed perpendicular to the beam path and the path curvature is then measured. By accurately measuring the magnetic field strength and the initial velocity of the electrons and the curvature of the beam the charge to mass ratio is simple to compute.


Data and Calculations

Complete notes on our data acquisition can be found in our lab manual: [[1]]



Summary and Comments

It seems likely that a large part of our error came from having the filament too high. This would impart too much energy to the electons and skew our data.


It is also possible that improved current readings contributed to differences between the two days data

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