Other Accomplishments http://voltaicpower.com/Biographies/MillikanBio.htm Millikan performed and verified many experiments during his lifetime.One that he verified was Einstein's photoelectric equation. While it had been known for a long time that light falling on metal surfaces may eject electrons from them (the photoelectric effect), Millikan was the first to determine with great accuracy that the maximum kinetic energy of the ejected electrons obey the equation Einstein had proposed in 1905: namely, 1/2mv2 = hf - P, where h is Planck's constant, f the frequency of the incident light, and P is, in Millikan's words, "the work necessary to get the electron out of the metal." Millikan determined h to have the value 6.57 x 10-27 erg-sec to "a precision of about 0.5 per cent," a value far better than had been obtained in any previous attempt. Millikan studies of the Brownian movements in gases resulted in the end of opposition to the atomic and kinetic theories of matter. He used similar experiments with cathode rays and with alpha- and beta- rays as he did with the oil drop. These experiments investigated the low of fall of small bodies through gases and the law of their Brownian movements. Millikan then worked with the hot-spark spectroscopy of the elements. This contained the region of the spectrum between the ultraviolet and X-radiation. This extended the ultraviolet spectrum to beyond what it had previously been known to exist. His discovery of his law of motion of a particle falling towards the earth after entering the earth’s atmosphere along with his other discoveries of electrical phenomena, led him to his significant studies of cosmic radiation. Without the discoveries that Millikan made the law of Einstein could not have any value. The theory of Bohr would also not have any support. During the First World War he worked on developing anti-submarine and meteorological devices.