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The Eye that Sees One 10-Millionth of an Inch A NEW type of electron microscope, twice as power- ful as any now in use, will go to work this summer to help science probe more deeply than ever before into the nature of cancer. The first of the new instruments, developed and built by RCA, made its public debut on May 11 at the United Nations, New York, in ceremonies at which it was turned over to the world-renowned Karolinska Institute of Stockholm, Sweden. The institute, one of the world's leading centers of research in cell structure, already has made extensive use of earlier RCA electron microscopes. It is receiving the powerful new instru- ment under a grant from the Rockefeller Foundation. With the new microscope, scientists will be able to study particles smaller than one lO-miUionth of an inch in diameter. Photographs taken by automatic cameras built into the slender pylon that houses the electron source and the lenses may be enlarged consistently up to 200,000 times the size of the specimen—a scale at which an ordinary dime would measure more than two miles across. By comparison, the previous type of electron microscope, with which the polio virus was first observed, normally provides useful photographic enlargements only up to 100,000 times, although far greater enlarge- ments have been achieved by a relative handful of highly skilled microscopists. Accepted by U. N. Delegate At the United Nations ceremony, the powerful microscope was accepted for the Karolinska Institute by Oscar Thorsing, Permanent Delegate to the U.N. from Sweden. Theodore A. Smith, Vice-President in Charge, RCA Engineering Products Division, presented the in- strument to Mr. Thorsing, observing that its introduction coincided with the 15th anniversary of the development of the first electron microscope, produced by RCA in 1939 and since employed in nearly every branch of scien- tific and industrial research. "We confidently believe that the many new features of this advanced instrument will pave the way to new knowledge to serve mankind everywhere," Mr. Smith said. Mr. Tiiorsing, accepting the microscope, read a letter from Dr. Fritiof S. Sjostrand, head of the Karolinska Institute, in which the Swedish scientist described the electron microscope as one of "the most important tech- nical instruments" in medical and biological research. Their use, he said, has helped to give scientists a fuller knowledge of the "most fundamental character of the life process." Dr. Sjostrand indicated in his letter that the power- ful new microscope will first be put to work to widen the scope of information about the construction of nor- mal cells in order to shed greater light on the nature of those which develop abnormally, as in cancer. "This work is now on foot and our earlier concep- tions of the cell structure have already had to be greatly modified," he wrote. "Only when sufficient observations have been made regarding normal cells, e.g., cells of the Oscar Thorsing, right, Swedish delegate to the U. N., listens as T. A. Smith, Vice-President in Charge, RCA Engineering Products Division, explains operation of the new electron microscope. ^4 RADIO AGE