Experiment 4 - Chemistry 117-327 Erin Callahan Jen Pride Caroline Smith Brandon Edney Lokys Palubinskas Millikan Experiment Introduction In 1913

Experiment 4 - Chemistry 117-327 Erin Callahan Jen Pride...

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Chemistry 117-327Erin CallahanJen PrideCaroline SmithBrandon EdneyLokys PalubinskasMillikan Experiment September 22, 2016IntroductionIn 1913 Millikan published his work on the charge of an electron. Millikan’s experiment involved using oildrops to determine the charge of the electron by using a known force- gravity- to balance the electrical force that is unknown- the charge of the electron. This is done by observing the behavior of neutral and charged spheres in the presence or absence of a constant electric field between electrode plates. This is a relatively safe experiment, however, whenever working in a lab basic safety precautions must be followed. In this case, the apparatus being used uses high voltage. Due to this, it is very important not to touch any exposed metal surfaces during the course of the experiment. In addition, it is important not toput anything metal into the hole on the left side of the main chamber of the apparatus when the voltage is on. Finally, as always, it is important to wear safety goggles when in the laboratory. Although they can be removed when looking through the microscope, it is imperative to leave them on at all other times when in the lab. Materials and MethodsMillikan apparatus, microscope, atomizer, bottle of polystyrene spheres in liquid suspension, plastic machine screw, stopwatchExperimental ProceduresFor this experiment, a handout1provided by the university was followed. No changes were made to the procedure outlined in the handout.
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  • Spring '16
  • Shane Cullian
  • Electric charge, Erin Callahan, Lokys Palubinskas, Brandon Edney, Jen Pride, Caroline Smith

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