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Oil Drop Experiment

Posted: Fri Oct 19, 2018 6:56 pm
by Chris Dis3L
In Robert Millikan's oil drop experiment, a fine mist of oil droplets are sprayed into a container with an electrically charged gas. The oil droplet's location is monitored by using a microscope as it passes between two charged plates. However, in the experiment, the oil droplets are also charged. The gas in the chamber is ionized by exposing it to x-rays, but what gives the oil droplets their charge and are they positively or negatively charged?

Re: Oil Drop Experiment

Posted: Sat Oct 20, 2018 11:11 am
by Elena Saab 4A
This is also confusing me. I think naturally oil is not charged so the experimenters must have altered it manually?

Re: Oil Drop Experiment

Posted: Sun Oct 21, 2018 1:24 pm
by Peichung Chou 1A
The oil-drops were negatively charged through ionization with an x-ray. Thus, they were intentionally charged by the experimenters Millikan and Fletcher.