TLS, one onionskin page, 7.75 x 10, Institute of Theoretical Physics letterhead, December 7, 1950. Letter to H. H. Nielsen, professor of physics at Ohio State University. In part: “In the days 6–10 July it is planned under the joint auspices of the International Union of Pure and Applied Physics and under the sponsorship of Unesco to arrange a Conference on problems of quantum physics in Copenhagen…we especially want to extend a cordial invitation to the old friends and collaborators of the Institute. During the Conference you will be a guest of the Institute which will arrange for housing…we cannot cover travelling expenses for visitors from countries overseas.” In very good condition, with central vertical and horizontal folds, irregularly trimmed edges, and some toning and show-through from tape remnants to edges.
An Associated Press piece from Copenhagen on July 6, 1951, published the next day in the Chicago Tribune, was headlined ‘Atomic Scientists of World Meet in Profound Secrecy,’ noting that nearly one hundred scientists gathered to discuss advances in the field of theoretical physics and that ‘the meeting was treated so secretly that even the names of the guests were not handed out.’ Interestingly, the first resolution concerning the establishment of a European Council for Nuclear Research was adopted at an intergovernmental meeting of UNESCO in Paris in December 1951—this resulted in the organization known as CERN, which was finally established in 1954 as a cooperative international research center. Pre-certified PSA/DNA.
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