Stevens Institute of Technology - Link Yearbook (Hoboken, NJ)

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..f During the past few years Professor I-Iazeltine has given close study to the preparation of a text in electrical engineering for the classroom and for the labora- tory. He has absorbed from many sources the best thought and practice and has put the essence of it into notes which have been revised from year to year until they are now nearly ready for hook form. In addition to his teaching duties, Professor Hazeltine has done consulting engineering work, particularly in the field of radio communications and on the problem of mitigating electrolytic corrosion of underground structures by stray currents. His radio work has included research and development, and services as expert in patent cases. He, himself, has several patents pending in connection with radio communication. In his electrolysis work he is associated with Albert F. Ganz, Inc. He is a member of the American Committee on Electrolysis, repre- senting the American Gas Association, and is at present Chairman of the Elec- trolysis Committee of this association. Professor Hazeltine's private researches have been in connection with the thermionic bulb. When it became apparent that the thermionic bulb was to be a potent factor in radio communication, Professor Hazeltine's mathematical mind attacked the problem in his accustomed thorough manner, and the results are embodied in the paper read before the Institute of Radio Engineers, noted above. In this paper is the first general mathematical discussion of the theory of the ther- mionic oscillator which appeared in the English language. Professor Hazeltine's war service consisted, among other things, of organizing Radio and Buzzer classes for men subject to call in the draft, to prepare them for service in the Signal Corps. These classes were held in the evenings in the Carnegie Laboratory during the first half of 1918. He also conducted a Radio Communi- cation Course in April and May, 1918, for some members of the Class of 1918 after their graduation. From May to September, 1918, Professor Hazeltine gave continuous service in the radio laboratory at the United States Navy Yard in IYashington, and until July, 1919, continued in a consulting capacity, making frequent trips to 1Vashington for this purpose. Professor Hazeltine is a member of the following societies. Tau Beta Pig American Institute of Electrical Engineers: Institute of Radio Engineers, Society for the Promotion of Engineering Education: American Electrochemical Society: American Gas Associationg New York Electrical Society: CAssociateD American Physical Societyg and a member of the Alumni Association of Stevens Institute of Technology. Professor Hazeltine works twelve hours a day, seven days a week, when a problem presents itself for solution. He is a conservative thinker, fair in his relations, refusing to pass judgment upon a matter until he is thoroughly con- versant with all the factors of the problem. He is a good story-teller and appre- ciative of humor. He is always courteous, and while the affairs of his own depart- ment are with him paramount, his interest is keen in the larger matters pertaining to Stevens. Nine

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