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Meanwhile, hundreds of police officers from Rochester and Syracuse, summoned by the local police, were in downtown Ithaca, and some university officials were urging Dr. Perkins to call the authorities in.

Dr. Corson counseled against it, and many people involved said his credibility with both the militants and the hard-line faculty and administrators was crucial to Dr. Perkins's decision to resolve the crisis by giving the militants what they wanted.

A national uproar ensued. President Richard M. Nixon called the militants "ideological criminals." A photograph of armed students leaving the building was on the front page of The New York Times and the cover of Newsweek, under the headline "Universities Under the Gun."

Demonstrations and occupations about racial tensions and the war in Vietnam continued after Dr. Corson was officially named president in 1970. But Dr. Corson, who was willing to wade into crowds of angry protesters, was credited with keeping the protests from escalating out of control. He stepped down in 1977 and was chancellor until he retired in 1979 at 65.

Homer Meade, who was an occupier of Straight Hall and is now an executive for an educational services firm, said Dr. Corson had had an acute understanding of "how close we were to a Kent State," referring to the killing of four students by Ohio national guardsmen the next year.

"He knew a lot of us in that building, and he understood that people were ready to die that day," Mr. Meade said. He was one of a half dozen activists who remained in touch with Dr. Corson.

Dale Raymond Corson was born in Pittsburg, Kan., on April 5, 1914, to Harry and Alta Hill Corson. He graduated from the College of Emporia in Kansas and received his master's degree at Ohio State and his Ph.D. in physics at the University of California, Berkeley. During World War II, he worked with British scientists in developing radar. He began teaching at Cornell in 1948.

Besides his son David, he is survived by his wife, Nellie; two other sons, Bruce and Richard; a daughter, Janet Corson-Rikert; and six grandchildren.

As dean of Cornell's College of Engineering, Dr. Corson helped start the university's Arecibo Observatory in Puerto Rico, the largest radio telescope in the world at the time, and a particle accelerator on campus.

Dr. Corson probably had a deeper understanding of volatility than most. In the early 1950s, he belonged to a team of physicists credited with discovering the radioactive element astatine. Astatine is among the least stable elements on the periodic table.

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Dale Corson, Cornell Administrator Who Helped Quell Protest, Dies at 97

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Meanwhile, hundreds of police officers from Rochester and Syracuse, summoned by the local police, were in downtown Ithaca, and some university officials were urging Dr. Perkins to call the authorities in.

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Here's a song called Astatine... Great Backround music

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Here's a song called Astatine... Great Backround music

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This is a song about Mad Chemical Rocks that don't really Exist..... This is the third video from our debut EP "Fondle Fantasy". Released on the 31st of January. You can listen to the full EP on Soundcloud: https://soundcloud.com/megacone/sets/fondle-fantasy-ep Like us on Facebook for further updates: https://www.facebook.com/megaconemusic

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Because of its radioactivity and short half life, Astatine is an element few chemists come into contact with. All the elements are featured at http://www.periodicvideos.com/

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Was once the rarest element on earth, until 1949 surpassed by francium

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Was once the rarest element on earth, until 1949 surpassed by francium

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Rarest natural occuring element on earths crust. the total amount of naturally occuring astatine in the world is equivilent to the weight of 5 nickels. 

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Rarest natural occuring element on earths crust. the total amount of naturally occuring astatine in the world is equivilent to the weight of 5 nickels. 

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Found in natural decay chains of Uranium and Thorium minerals

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Found in natural decay chains of Uranium and Thorium minerals

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Named Astatine because they found out it was radioactive so they named it 'Astatos' which means unstable in Greek

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Named Astatine because they found out it was radioactive so they named it 'Astatos' which means unstable in Greek

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Not abundant in nature

Radioactive tracer

In cancer treatment

A reletive, astatone is used in nail polish

So unstable and radioactive that not very many products use it.

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http://www.periodictable.com/Elements/085/index.wt.html

https://www.youtube.com/watch?v=sSL7EwdILIE&list=PL7A1F4CF36C085DEI&index=85&spfreload=5

http://www.chemicool.com/elements/astatine.html

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Solid

Heat of fusion 6 K J/mol

Heat of vaporization 40 K J/mol

Thermal Conductivity 2 W

Not magnetic or electrical

Highly unstavle, can't be photographed

highly radioactive

Compounds decompose very easily, longest was 8.3 hours

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Atomic weight: 210

Atomic Number: 85

Density: 7 grams unit/cm

Melting Point: 302 C

Boiling Point: 336.8 C

Block P

Group 17

Period 6

Electron Configuration: [Xe] 4f14 5d10 6s2 6p5

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1940 by Dale R. Corson, Kenneth Ross Mackenzie, and Emilio Segne` at the University of California, Berkley

Made by bombarding bismeth-209 with alpha particles from a particle accelerator, which produced astatine-211

It wasn't discovered in nature however until three years after.