What experiment did Robert Millikan do to changed atomic theory?

Answer 1

He used voltage adjustments to make charged oil drops float

Answer 2

Robert Millikan measured the charge on an electron.

To do this, he built a spray to spray oil droplets. As the droplets came out of the nozzle they would become electrically charged by friction. He would then choose one of the droplets and measure the speed at which it was falling. He would then switch on an electrostatic field, and adjust it until the droplet stopped falling.

From the speed of falling (terminal velocity) he could calculate its weight. Knowing the exact electric field strength to balance this weight exactly, he could then calculate the charge on the oil droplet. He did this with many oil droplets, and found that all their charges were multiples of a common value of 1.592 × 10−19 Coulombs (the charge of a single electron). Modern scientists, however, prove that the charge of an electron is 1.602 176 53(14) x 10−19 coulombs. Probably due to Millikan's use of an inaccurate value for the viscosity of air.

Answer 3

Robert Millikan conducted the oil-drop experiment to measure the charge of the electron. This helped provide more precise measurements for the fundamental constant e and led to a more accurate understanding of atomic structure, specifically the existence of discrete, quantized electrical charges within atoms.

Answer 4

Robert Andrews Millikan was able to generate a stream of oil drops with a known and uniform mass. The drops were electrically charged and then allowed to to enter through a tiny hole in the upper plate of an electrical capacitor. The voltage across the capacitor plates was altered to control the rate of the fall of the oil drop against the force of gravity. By measuring the rate of the fall of droplets and the voltage applied Millikan was able to find the charge of the electron.

Answer 5

Calculated the charge of the electron by doing his famous experiment called the Oil Drop Experiment

Answer 6

He enjoyed Golf and tennis! he also was married and had three kids.

Answer 7

Robert Millikan determined the electrical charge of the electron.

Answer 8

The experiment of Millikan is called "oil drop experiment"; they studied the movement of microdrops in an electric field.

Answer 9

He discovered the charge of the electron.

Answer 10

dicovering the charge of electrons