Teaching Modern Physics - QuarkNet - Fermilab

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Millikan’s Oil Drop Experiment The electrical charge carried on an electron is a fundamental constant in physics. The accepted value for e = 1.602 E-19 C. R. A. Millikan was the first to measure the constant. He did so in his oil drop experiment (1909-1913). Millikan also showed the discreteness of the charge, meaning only integral multiples of the charge exists. http://webphysics.davidson.edu/Alumni/ToHaynie/OilDrop/oilappa.htm (the apparatus) 43
In his experiment, Millikan tried to suspend an oil drop within an electric field so that: Fe = mg qE = mg and since V = Ed (qV)/d = mg or q/m = (gd)/V Millikan always seemed to get a certain multiple of a small amount of charge. Based upon this result and the known value of g, the distance between the plates and the electric potential between them, he could mass the electron! 44
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Materials for Teaching Modern Physi
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Which activities did you use in you
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Page 11 and 12: Problems & Worksheets * This activi
Page 13 and 14: The Cloud Chamber: In the Nobel Pri
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Draw Geiger, Marsden, and Rutherfor
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Particle Acceleration (Principles)
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Electric Field and Acceleration +
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Multistage Accelerators (LINAC) 1 2
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Particle Accelerators Why were they
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Cyclotrons are constructed as two
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QUIZ ON PARTICLE ACCELERATORS 1. De
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Z Boson Mass Reconstruction for DØ
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1 Z Boson Mass Reconstruction for D
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3D Z Boson Mass Reconstruction Answ
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d.) energy / a silicon detector and
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Anticharm ( c ) Antimatter Quark Ch
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Gluon Gauge boson Force carrier: St
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Standard Model Review - Answer Key
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Newton’s Universal Law of Gravita
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All questions from project written
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periodicals and newsletters. The co
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Fermilab’s Accelerators This is a
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A Game for Building a Detector http
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us. An alternate “radiation” so
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Day 4: 1. Question of the Day: A ha
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Teacher Resources: 1. Standard Mode
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