Glenn T. Seaborg
Searching For the Elements
In 1940, a physicist named Ed McMillan made the first transuranic element using the University of California-Berkeley's cyclotron. This was element 93, Neptunium. Transuranic means that it is an element above Uranium, and it is not naturally found in nature. After he made this discovery, scientists would no longer be looking for new elements, but making them. Once McMillan had found element 93, he set out to make 94. However, he was recruited to work on radar because of the threat of WWII reaching the United States. Glenn T. Seaborg, a coworker of McMillan's, took over where McMillan had left off, element 94.
Atomic Explosion Over Nagasaki Japan. Digital image. Atomicarchive.com. AJ Software & Multimedia, n.d. Web. 11 Apr. 2016. <http://www.atomicarchive.com/History/twocities/ nagasaki/page4.shtml>.
Einstein's Letter to President Roosevelt. Digital image. JF Ptak Science Books. John F. Ptak, n.d. Web. 11 Apr. 2016. <http://longstreet.typepad.com/thesciencebookstore/2012/08 /letters-of-warning-einstein-and-szilard-on-the-atomic-bomb-1939-1945.html>.
Glenn Seaborg and Ed McMillan. Digital image. Berkeley Lab- 75 Years of World-Class Science. N.p., n.d. Web. 11 Apr. 2016. <http://www2.lbl.gov/Publications/75th/files/03-75- milestones.html>.
Mystery of Matter: Search for the Elements. Wisconsin Public Television. PBS, 19 Aug. 15. Web. 11 Apr. 2016. <http://www.pbs.org/video/2365543501/>.