MISSING ELEMENT BELIEVED FOUND.—University of California scientists shown at the college after the announcement of the discovery of what appears to be the long-sought missing element No. 85. Confirmation of the discovery will leave only one element in the family of 92 chemical elements still undiscovered. They are from left: Dr. Dale Corson, Kenneth R. MacKenzie, and Dr. Emilio Segre. The new substance was produced by bombarding ordinary bismuth in Dr. Ernest O. Lawrence’s atom-smashing cyclotron with 32,000,000-volt particles of helium. The substance is highly radio-active, disintegrates emitting X-rays and helium particles, and has an average life of about seven and a-half hours. The scientists are shown at the University laboratory.
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Wairarapa Times-Age, 1 June 1940, Page 3
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111MISSING ELEMENT BELIEVED FOUND.—University of California scientists shown at the college after the announcement of the discovery of what appears to be the long-sought missing element No. 85. Confirmation of the discovery will leave only one element in the family of 92 chemical elements still undiscovered. They are from left: Dr. Dale Corson, Kenneth R. MacKenzie, and Dr. Emilio Segre. The new substance was produced by bombarding ordinary bismuth in Dr. Ernest O. Lawrence’s atom-smashing cyclotron with 32,000,000-volt particles of helium. The substance is highly radio-active, disintegrates emitting X-rays and helium particles, and has an average life of about seven and a-half hours. The scientists are shown at the University laboratory. Wairarapa Times-Age, 1 June 1940, Page 3
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