The precision and ingenuity of Robert A. This equilibrium allowed for a direct calculation of the charge carried by the droplet.
Revisiting Millikan Oil Drop Experimental Details
The core procedure involved carefully balancing the downward pull of gravity with the upward push of the electric field, causing a specific droplet to hover motionless. By measuring the terminal velocity of a droplet during its free fall, they could calculate its mass and, consequently, the gravitational force acting upon it.
The droplets could carry 1e, 2e, 3e, or other multiples of the elementary charge, but never a fractional value of that base unit. Using this mass and the known strength of the electric field, they could solve for the charge (q) using the simple equation qE = mg, where E is the electric field, m is the mass, and g is the acceleration due to gravity.
Revisiting Millikan Oil Drop Experimental Details
The scientific community needed a method to isolate and measure a single charge, a task that required exceptional control over microscopic particles. By applying a voltage across the plates, Millikan could create an electric field that could be adjusted to exert an upward force on the negatively charged droplets.
More About Millikan's oil drop experiments
Looking at Millikan's oil drop experiments from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Millikan's oil drop experiments can make the topic easier to follow by connecting earlier points with a few simple takeaways.
