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Design of the Experiment

Design of the Experiment. Sketch of apparatus used Blue plates charged – charge can be varied. Oil drops fall through hole in top plate. Xrays place electrons on drops. Microscope used for observing drops. Design of the Experiment. Photo of actual apparatus used in the experiments.

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Design of the Experiment

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  1. Design of the Experiment Sketch of apparatus used Blue plates charged – charge can be varied. Oil drops fall through hole in top plate. Xrays place electrons on drops. Microscope used for observing drops.

  2. Design of the Experiment Photo of actual apparatus used in the experiments.

  3. Design of the Experiments The time of fall of oil drop in the absence of field is measured between two fixed points. The drop falls due to gravity.

  4. Design of the Experiment The electric field needed to hold drop steady between the two plates is measured. When a drop is suspended, the force due to gravity (force down) equals the force due to electrical attraction to + plate (force up).

  5. Design of the Experiment Information needed: Density of air Viscosity of air Density of oil Equation for rate of fall Strength of electric field Temperature Air Pressure

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