Main content

S. Reid Warren Papers

Notifications

Held at: University of Pennsylvania: University Archives and Records Center [Contact Us]3401 Market Street, Suite 210, Philadelphia, Pennsylvania 19104

This is a finding aid. It is a description of archival material held at the University of Pennsylvania: University Archives and Records Center. Unless otherwise noted, the materials described below are physically available in their reading room, and not digitally available through the web.

Overview and metadata sections

Samuel Reid Warren, Junior, was born on January 31, 1908 in the Mount Airy section of Philadelphia, the son of Samuel Reid and Lora (Chandler) Warren.

In 1924, S. Reid Warren, Jr., entered the newly formed Moore School of Electrical Engineering at the University of Pennsylvania. Through a scholarship and summer jobs with the J. C. Holtby radio store in Lansdowne, Philadelphia Electric Company and Bell Telephone, he was able to continue his studies at Penn. In 1928, Warren received his B.S. in Electrical Engineering. Though tempted, as many of his class were, to begin working for private industry, Warren was persuaded by Harold Pender, the Dean of the School, to continue on in the graduate school. This decision marked the beginning of his long career with the University of Pennsylvania. The following year, 1929, Warren was granted a Master's degree in Electrical Engineering. Again encouraged by his teachers and the dean, he progressed through the doctoral program. With the onslaught of the depression, Warren was forced to prolong his studies. It was not until 1937 that he finally received the Sc.D. in Electrical Engineering (the University did not grant PhD's in electrical engineering at this time).

At the beginning of Warren's doctoral studies, he became involved the field of biomedical research or development. Charles Nathan Weyl, then an assistant professor in the Moore School, had been approached by Dr. F. Maurice McPhedran of the Henry Phipps Institute of the University of Pennsylvania to assist McPhedran in the operation of x-ray machinery. Weyl agreed to help McPhedran. Knowing that Warren was entering the doctoral program, Weyl asked Warren to join him in this new research. So, in 1929, Warren was hired as a research assistant by the Moore School. The research was funded by the National Tuberculosis Association and concentrated upon analysis of x-ray machinery and techniques applied to chest examinations. On Warren's suggestion, the research team engaged in on-site inspections in tuberculous sanatoria throughout the United States and Canada. The partnership with Weyl was quite productive. By 1937, they had written one book and 15 articles on the subject. When Weyl assumed the responsibilities of the family's printing business, he was to take a less active role in the project and Warren took over. Warren directed the research until 1944 at which time he became more involved in the Moore School.

While Dr. Warren was doing his x-ray research, he also was teaching in the Moore School. He was appointed Instructor in 1933. Due to his distinguished research and the respect of the faculty, Warren became an Assistant Professor in the Moore School and an Associate in radiological physics in the Graduate School of Medicine in 1939. The medical school course sought to familiarize physicians with the physics behind x-rays, an innovative idea for traditional medical education. This important work with the medical school lead to his advancement through their tenure system, assistant in 1942, associate in 1947, and full status in 1951. The trek through the Moore School, however, was slightly more rapid, associate professor in 1944 and full professor in 1949.

Soon after S. Reid Warren's full appointment in the Moore School, he entered into the administration as the Vice Dean 1951. Under the 1954 reorganization of the various engineering schools at the University of Pennsylvania into the Engineering Schools, Dr. Warren became Assistant Vice President (later called Associate Dean) for Undergraduate Engineering Affairs, a post which he held until 1973. Possessing a position great influence in the school, Warren had the opportunity to generate discussion and attempt implementation of his unique views on undergraduate engineering education. He saw the profession as becoming too specialized and isolated. He believed that the student should have a broad and well grounded education in the humanities, not just science. The ideal would be to have the student enter into concentrated engineering studies at graduate level, after completing a varied program in the university. By writing articles, participating in various university committees, Warren was able to disseminate his opinions. Though he was never able to attain this ideal, Warren did present these views for discussion among his peers. He was, however, able to stress the need for good student advising which he saw as the key to guiding young people in a broad education. Even after his retirement in 1976 from the College (now School) of Engineering and Allied Sciences, as it was then called, he continued to labor to this end by advising undergraduates.

Though Dr. Warren retired from his teaching post at the University in 1976, he still work on a number a committees. After serving on the board of governors for a number of years, he acted as president of the Faculty Club from 1977 to 1979. He also participated in the Honorary Degrees Committee, 1978-1981. No doubt because of his long association with the school, Warren was chosen to arrangement and effect class reunions of old Moore School alumni.

Dr. Warren was quite active in a number of professional organizations. He served on close to 15 committees for the American Institute of Electrical Engineers beginning in 1943. From 1954 to 1964, he gained international recognition as the secretary of Working Group 65, Definitions in Radiology and Radiological Physics under the Technical Committee of the International Electrotechnical Commission in Geneva. Another position which he held was as a member of the Franklin Institute's Committee on Science and the Arts, which committee he joined in 1958. Some of the other organizations that Warren participated in included the American Society of Engineering Education, Engineers' Council for Professional Development, and the Etta Kappa Nu Association, a fraternity for engineers.

S. Reid Warren, Jr., married Marian Stradling on September 20, 1930 and they had two sons, S. Reid, III, and Alan.

The S. Reid Warren, Jr., Papers primarily document his professional career in the field of electrical engineering and radiologic physics, and in particular his role as an educator.

Dr. Warren's vocation at the University of Pennsylvania represents the bulk of the collection. Though Correspondence Series, 1935-1989, contains a number of files which have exchanges between him and such University officials as Joseph Bordogna, Dean of the School of Engineering and Allied Sciences, and Gaylord Harnwell, President of the University, it is the Professional Papers which provided the greatest insight to Warren's work at Penn. The Professional Papers contain letters, announcements, and notes, as well as a large number of committee related material. In addition to a small selection of lecture notes, Warren's activities in the SEAS are well documented. The class reunion files, 1979-1988, which relate to the logistics and other arrangements for these functions evince Warren's continuing involvement with the SEAS after his retirement. A good chronicle of his career is the video tape interview.

Dr. Warren's efforts to provide undergraduate engineering students with a well rounded education in the humanities are found in the numerous committee files, 1948-1979, such as those for Undergraduate Affairs Committee, Board of Engineering Education and Education Council. These files contain minutes, agendas, notes and correspondence. The undergraduate education and curricula section of the SEAS also is a good source. Since Dr. Warren gave a number talks on this subject, a large among of material is also in the Speeches subseries, 1950-1980. There are also manuscripts and proofs of articles on this subject in the Writings subseries, 1930-1986. His broad interest in education is also seen in the file of Education Committee of Episcopal Academy.

The extent of professional associations of S. Reid Warren, Jr., can be found in the Professional Papers series, 1930-1991. The extant of these activities are documented in files for such organizations as the American Institute for Electrical Engineers, the Institute of Electrical and Electronics Engineers (IEE) and the International Electrotechnical Commission (IEC). His work on defining electrotechnical terms is the most complete portion of these papers. These files have correspondence with committee members, minutes, agendas, and various drafts of the final report.

Documentation concerning Warren's research work in the field of engineering is rather limited. Most of this material, especially his notes, are found in the Francis A. Countway Library of Medicine at Harvard. This collection, however, does have reprints of many of his early articles. There are also a number glass lantern slides used in lectures on radiologic physics.

Dr. Warren's interest in the history of technology is well documented. The files relating to the development of ENIAC/EDVAC, 1969-1984, contain material on this important project at the Moore School and Warren's connection to it. Also the History Committee of the IEE papers, 1977-1980, which include correspondence and minutes, show his efforts to preserve the history of engineering.

The papers of S. Reid Warren, Jr., a professor in electrical engineering at the University of Pennsylvania, are organized in three series. They are Correspondence, Personal Papers and Professional Papers. The Correspondence series, 1935-1989, (.5 cubic ft.) has two parts: one with letters arranged chronologically and the other arranged alphabetically by correspondent. The Personal Papers, 1923-1985, (.25 cubic ft.) is arranged alphabetically by subject.

The Professional Papers have the following subseries: University of Pennsylvania material, 1936-1988, (1.5 cubic ft.); Professional Organizations, 1942-1986, (1.25 cubic ft.); Professional Trips, 1952-1972, (0.25 cubic ft.); Speeches, 1950-1980, (0.25 cubic ft.); Writings, 1930-1986, (0.25 cubic ft.); Reference Material; Engineers Certificates, 1945-1991; Awards, 1974-1978; Miscellaneous; and Glass Lantern Lecture Slides (0.25 cubic ft.). The University of Pennsylvania subseries is broken even further into Lecture Notes, School of Engineering and Allied Sciences, and University Committees. These subseries, with the exception of Professional Trips, Speeches and Writings, are ordered alphabetically by subject. The exceptions are arranged chronologically.

Gift of S. Reid Warren, Jr., conveyed in six parts, April 9, 1976, January 1977, February 16, 1977, May 1986, May 12, 1989, 1 May 1992.

Publisher
University of Pennsylvania: University Archives and Records Center
Finding Aid Author
J.M. Duffin under the direction of Theresa R. Snyder
Finding Aid Date
1992
Access Restrictions

Access to collections is granted in accordance with the Protocols for the University Archives and Records Centers.

Collection Inventory

Request to View Materials

Materials can be requested by first logging in to Aeon. Then, click on the ADD button next to any containers you wish to request. When complete, click the Request button.

Request item to view

1935-1955.
Box 1 Folder 1
1956.
Box 1 Folder 2
1957-1961.
Box 1 Folder 3
1962-1966.
Box 1 Folder 4
1967-1969.
Box 1 Folder 5
1970-1972.
Box 1 Folder 6
1973-1976.
Box 1 Folder 7
1977.
Box 1 Folder 8
1978-1979.
Box 1 Folder 9
1980-1982.
Box 1 Folder 10
1983-1986.
Box 1 Folder 11
1987-1989.
Box 1 Folder 12
1973-1975.
Box 1 Folder 13
1976-1988.
Box 1 Folder 14
Gaylord Harnwell, 1960-1961.
Box 1 Folder 15
Martin Meyerson, 1970-1978.
Box 1 Folder 16
Nut Letters, 1945-1976.
Box 1 Folder 17
Provost, 1959-1980.
Box 1 Folder 18
Henry Tonkin, Vice Provost of Undergraduate Affairs, 1971-1976.
Box 1 Folder 19
1974.
Box 1 Folder 20
1975-1986.
Box 1 Folder 21
1989.
Box 1 Folder 22
University Archives, 1955-1985.
Box 1 Folder 23

Clippings.
Box 1 Folder 24
Garnet and Gray, 1923-1924.
Box 1 Folder 25
Reunion, Class of 1924, 1973-1974.
Box 1 Folder 26
Photographs.
Box 1 Folder 27
Vitæ.
Box 1 Folder 28

Electrical Engineering 2A, 1936-1968.
Box 1 Folder 29
Electrical Engineering 4A, 1936.
Box 1 Folder 30
Electrical Engineering 484, 1969.
Box 1 Folder 31
Graduate Division School of Medicine, Dept. of.
Box 1 Folder 32
Radiology, 1967-1971.
Box 1 Folder 33
Class of 1929.
Box 1 Folder 33
Class of 1930.
Box 1 Folder 34
Class of 1931.
Box 1 Folder 35
Class of 1932.
Box 1 Folder 36
Class of 1933.
Box 1 Folder 37
Class of 1934.
Box 1 Folder 38
Class of 1935.
Box 2 Folder 1
Class of 1936.
Box 2 Folder 2
Class of 1937.
Box 2 Folder 3
Class of 1938.
Box 2 Folder 4
Class of 1928 (1).
Box 2 Folder 5
Class of 1928 (2).
Box 2 Folder 6
Appointment Schedule, 1972-1976.
Box 2 Folder 7
Department of Radiology Ventures, 1970-1976.
Box 2 Folder 8
Education Committee.
Box 2 Folder 9
Correspondence, 1969-1984.
Box 2 Folder 10
Articles.
Box 2 Folder 11
John Brainerd.
Box 2 Folder 12
Court Documents.
Box 2 Folder 13
John von Neuman.
Box 2 Folder 14
Sperry Rand Information.
Box 2 Folder 15
Nancy Stern Interview with S. Reid Warren.
Box 2 Folder 16
Faculty Affairs, 1954-1970.
Box 2 Folder 17
Faculty Matters, 1971-1973.
Box 2 Folder 18
Moore School Agreement.
Box 2 Folder 19
Moore School Pamphlets.
Box 2 Folder 20
Retirement Dinner, 1976.
Box 2 Folder 21
S. Reid Warren Award for Distinguished Teaching.
Box 2 Folder 22
Teaching Precepts, 1980.
Box 2 Folder 23
1956-1964.
Box 2 Folder 24
1965.
Box 2 Folder 25
1966.
Box 2 Folder 26
1968-1969.
Box 2 Folder 27
1979 (1).
Box 2 Folder 28
1979 (2).
Box 2 Folder 29
Subcommittee on Curricula, 1966-1967.
Box 2 Folder 30
1948-1956.
Box 2 Folder 31
1958-1961.
Box 2 Folder 32
1962-1972.
Box 2 Folder 33
1973-1980, n.d.
Box 2 Folder 34
Bicentennial [1976] Committee, 1974-1975.
Box 2 Folder 35
Board of Engineering Education, 1955-1957.
Box 2 Folder 36
Committee on Adult Education, 1959-1960.
Box 2 Folder 37
Committee on Admission, 1957-1960.
Box 2 Folder 38
1968-1978.
Box 2 Folder 39
1978.
Box 2 Folder 40
Council of Baccalaureate Faculties, 1960.
Box 2 Folder 41
January-August 1961.
Box 3 Folder 1
September-December 1961.
Box 3 Folder 2
1960.
Box 3 Folder 3
1949-1954.
Box 3 Folder 4
1955.
Box 3 Folder 5
Special Committee, 1949-1951.
Box 3 Folder 6
Subcommittee on Proposed Reorganization of the Education Council, 1948-1953.
Box 3 Folder 7
1960-1961.
Box 3 Folder 8
1972-August 1977.
Box 3 Folder 9
September 1977-April 1978.
Box 3 Folder 10
May-December 1978.
Box 3 Folder 11
1979.
Box 3 Folder 12
Lenape Room, 1972.
Box 3 Folder 13
Nominating Committee, 1972.
Box 3 Folder 14
Faculty Senate, Subcommittee on Financial Policies and Procedures, 1951-1953.
Box 3 Folder 15
General Alumni Society, 1963.
Box 3 Folder 16
Lenapi Club, 1956-1958.
Box 3 Folder 17
Physics Committee, 1951-1954.
Box 3 Folder 18
President's Committee on Student Advising and Counseling, 1961, 1965.
Box 3 Folder 19
Proposed Institute for Nuclear Education and Science, [1955].
Box 3 Folder 20
Special Program for Industrial Research Personnel, 1958.
Box 3 Folder 21
Search Committee for the Dean of the College of Arts and Sciences, 1959-1960.
Box 3 Folder 22
Senate Subcommittee of Costs and Budgets, 1954.
Box 3 Folder 23
Subcommittee to Advise the Pennsylvania Players, 1959-1960.
Box 3 Folder 24
Twenty-five Year Club.
Box 3 Folder 25
University Council, Committee on Advising, 1968-1969.
Box 3 Folder 26
University Lecture Committee, 1958-60.
Box 3 Folder 27
University Senate, 1952-1953.
Box 3 Folder 28
1954.
Box 3 Folder 29
1960.
Box 3 Folder 30
1960, General Committee.
Box 3 Folder 31
1960, Programs.
Box 3 Folder 32
Conference Proceedings, 1976-1982.
Box 3 Folder 33
Episcopal Academy, Education Committee, 1960-1961, 1966.
Box 3 Folder 34
Fellows in American Studies, 1965-1975, 1985.
Box 3 Folder 35
Franklin Inn Club, 1942.
Box 3 Folder 36
Awards Committee, 1960-1961.
Box 3 Folder 37
Science and Art Committee, 1963.
Box 3 Folder 38
Annual Meeting, Philadelphia, 1954.
Box 3 Folder 39
1958-March 1959.
Box 3 Folder 40
April-December 1959.
Box 3 Folder 41
1960.
Box 3 Folder 42
1961.
Box 3 Folder 43
1962-1963.
Box 3 Folder 44
1964.
Box 3 Folder 45
1965.
Box 3 Folder 46
January-April 1966.
Box 4 Folder 1
May-December 1966.
Box 4 Folder 2
1967.
Box 4 Folder 3
1968.
Box 4 Folder 4
1961.
Box 4 Folder 5
1964 (1).
Box 4 Folder 6
1964 (2).
Box 4 Folder 7
1965 (1).
Box 4 Folder 8
1965 (2).
Box 4 Folder 9
1965 (3).
Box 4 Folder 10
1966 (1).
Box 4 Folder 11
1966 (2).
Box 4 Folder 12
1966 (3).
Box 4 Folder 13
1966, Items Not Inserted (1).
Box 4 Folder 14
1966, Items Not Inserted (2).
Box 4 Folder 15
Master Copy, 1966-1967 (1).
Box 4 Folder 16
Master Copy, 1966-1967 (2).
Box 4 Folder 17
1967 (1).
Box 4 Folder 18
1967 (2).
Box 4 Folder 19
1967 (3).
Box 4 Folder 20
1968.
Box 4 Folder 21
1969.
Box 4 Folder 22
Nomenclature Reports, 1959 (1).
Box 4 Folder 23
Nomenclature Reports, 1959 (2).
Box 4 Folder 24
International Electrotechnical Vocabulary, 1985-1986.
Box 4 Folder 25
1975-1978.
Box 4 Folder 26
1980-1984.
Box 4 Folder 27
1977-1980.
Box 4 Folder 28
1978-August 1979.
Box 4 Folder 29
September-December 1979.
Box 4 Folder 30
1980.
Box 4 Folder 31
1981-1983.
Box 5 Folder 1
Philadelphia Section, Awards Committee, 1964.
Box 5 Folder 2
75th Anniversary, 1979.
Box 5 Folder 3
Interscience Committee, 1958-1960.
Box 5 Folder 4
National Society of Professional Engineers, National Engineer's Work, 1959.
Box 5 Folder 5
Pratt Institute, Evaluation Committee, 1959-1960.
Box 5 Folder 6
1952 and 1954, Itineraries.
Box 5 Folder 7
Correspondence.
Box 5 Folder 8
Itineraries and Receipts.
Box 5 Folder 9
Bills and Receipts.
Box 5 Folder 10
1959-1960.
Box 5 Folder 11
January-August 1961.
Box 5 Folder 12
September-December 1961.
Box 5 Folder 13
January-April 1962.
Box 5 Folder 14
May-December 1962.
Box 5 Folder 15
Lists and Itineraries.
Box 5 Folder 16
Notes on Professional Visits.
Box 5 Folder 17
Warren Newsletter.
Box 5 Folder 18
1972 Trip.
Box 5 Folder 19
1950-1959.
Box 5 Folder 20
1958, 1960-1961, "Engineering the Unpredictable Profession".
Box 5 Folder 21
1960-1965.
Box 5 Folder 22
1966-1973.
Box 5 Folder 23
1980.
Box 5 Folder 24
1950-1966.
Box 5 Folder 25
1968-1980, n.d.
Box 5 Folder 26
Radio Programs, 1938, 1964.
Box 5 Folder 27
The Elements of Radiological Physics, 1939-1957, publishing.
Box 5 Folder 28
Reviews of, 1936-1942.
Box 5 Folder 29
1954: The Embryology of the Engineer.
Box 5 Folder 30
1956: Humanism and Engineering Education.
Box 5 Folder 31
1956: The Motivation of Engineering Students in the Study of English.
Box 5 Folder 32
1961: Engineering: A Profession in Transition.
Box 5 Folder 33
1963: Which Way?.
Box 5 Folder 34
1964: The Status of the Humanities in Engineering Education.
Box 5 Folder 35
1971: Dialogue (Relevant, Of Course) But a Father and His 16-Year-Old Son.
Box 5 Folder 36
1972: Eight Precepts.
Box 5 Folder 37
1974: Progress?.
Box 5 Folder 38
1986: The Good Old Days with William J. Hogan (1).
Box 5 Folder 39
1986: The Good Old Days with William J. Hogan (2).
Box 5 Folder 40
1986: The Good Old Days with William J. Hogan (3).
Box 5 Folder 41
n.d.: Harold Pender.
Box 5 Folder 42
n.d.: Science in Engineering Education.
Box 5 Folder 43
n.d.: Techniques for Motivating Students.
Box 5 Folder 44
1941.
Box 5 Folder 45
1943.
Box 5 Folder 46
1945, 1957.
Box 5 Folder 47
1930-1934.
Box 5 Folder 48
1935-1938.
Box 5 Folder 49
1939-1940.
Box 5 Folder 50
1941-1946.
Box 6 Folder 1
1956-1956.
Box 6 Folder 2
1958-1984.
Box 6 Folder 3
Reference Material (1).
Box 6 Folder 4
Reference Material (2).
Box 6 Folder 5
Engineers Certificates, 1945-1991.
Box 6 Folder 6
Awards, 1974-1978.
Box 6 Folder 7
Miscellaneous, Etta Kappa Nu Newsletters.
Box 6 Folder 8
Video Tape of Interview with S. Reid Warren.
Box 6
Data card for test of radiographic machines.
Box 1 Folder 1
Electrocardiographic Tracings.
Box 1 Folder 2
Muller water-cooled tube (circa 1929).
Box 1 Folder 3
Half-wave rectifier diagram.
Box 1 Folder 4
Mechanical rectifier diagram.
Box 1 Folder 5
Density vs. Developing Time.
Box 1 Folder 6
Density vs. Developing Temperature.
Box 1 Folder 7
Density vs. Age of Film.
Box 1 Folder 8
Density vs. x-ray tube voltage (2 films).
Box 1 Folder 9
Density vs. Exposure time (2 films).
Box 1 Folder 10
Density vs. x-ray tube voltage.
Box 1 Folder 11
Density vs. exposure time.
Box 1 Folder 12
Density vs. x-ray tube current.
Box 1 Folder 13
Density vs. x-ray tube cathode current.
Box 1 Folder 14
Density vs. supply line voltage.
Box 1 Folder 15
Table of 5 causes of variation of density.
Box 1 Folder 16
Enlargement and Tube Current vs. Focal Spot-film Distance.
Box 1 Folder 17
Thicknesses of Al Equivalent to Chest Areas.
Box 1 Folder 18
Bucky of Cavity of Apex.
Box 1 Folder 19
Old Diathermy Circuit.
Box 1 Folder 20
Old Diathermy Tube Circuit.
Box 1 Folder 21
d'Arsonval String Electrocardiograph.
Box 1 Folder 22
Old picture of patient connected to Electrocardiograph.
Box 1 Folder 23
Diagram of Electrocardiograph.
Box 1 Folder 24
Calibration of Electrocardiograph.
Box 1 Folder 25
Roentgen's Picture of Hand with Rings.
Box 2 Folder 26
Bohr Model of Li7.
Box 2 Folder 27
Energy Level Diagram.
Box 2 Folder 28
Battery connected to Resistors vs. Hydraulic Setup.
Box 2 Folder 29
Oscillograph.
Box 2 Folder 30
L . R Circuit (ac with Oscillograms).
Box 2 Folder 31
Two-winding Transformer.
Box 2 Folder 32
Radiographic Outfit (Westinghouse).
Box 2 Folder 33
Therapy Outfit (Picker).
Box 2 Folder 34
Free Air Chamber.
Box 2 Folder 35
Victoreen.
Box 2 Folder 36
Isodose Curves.
Box 2 Folder 37
Absorption Curves.
Box 2 Folder 38
Burned Back.
Box 2 Folder 39
Lesions of legs, following x-ray Epilation.
Box 2 Folder 40
Protection Data (mm Pb, Distance, Ma-min.).
Box 2 Folder 41
Lead vs. Concrete.
Box 2 Folder 42
Protection for 0.1 r per day (Braestrup).
Box 2 Folder 43
Density vs. Thickness of Al, Sanatorium chest techniques.
Box 2 Folder 44
Half Chest and Aluminum Ladder.
Box 2 Folder 45
Chest film, high contrast.
Box 2 Folder 46
Chest film, low contrast.
Box 2 Folder 47
Chest film, overexposed.
Box 2 Folder 48
Density vs. Thickness of Al, chest equivalents.
Box 2 Folder 49
Chest Equivalents vs. Technique.
Box 2 Folder 50
Ma-sec vs. roentgens in air (Ritter-Warren).
Box 3 Folder 51
Absorption in aluminum (Ritter-Warren).
Box 3 Folder 52
Inverse square from 67 cm (Ritter-Warren).
Box 3 Folder 53
Roentgens per 100 ma sec. vs. depth, 67 cm (Ritter-Warren).
Box 3 Folder 54
Roentgens per 100 ma sec. vs. depth, 40 cm (Ritter-Warren).
Box 3 Folder 55
CRO Diagram and Equations.
Box 3 Folder 56
Photomultiplier.
Box 3 Folder 57
Beta Spectrometer.
Box 3 Folder 58
Cyclotron.
Box 3 Folder 59
Betatron.
Box 3 Folder 60
Wilson Cloud Chamber- Photo and Compton electrons from x-rays.
Box 3 Folder 61
Wilson Cloud Chamber- Alphas.
Box 3 Folder 62
Wilson Cloud Chamber- Positron (Anderson).
Box 3 Folder 63
Nuclear Reaction Equations.
Box 3 Folder 64
Nuclear Reaction Equations (Sun).
Box 3 Folder 65
Fission of U235.
Box 3 Folder 66
Plutonium.
Box 3 Folder 67
Graph of Fission Fragments.
Box 3 Folder 68
Fission Energies.
Box 3 Folder 69
Power Pile.
Box 3 Folder 70
Electromagnetic Spectrum.
Box 4 Folder 1
Line Focus x-ray tube.
Box 4 Folder 2
Line Focus x-ray tube, detail.
Box 4 Folder 3
Half-wave diagram.
Box 4 Folder 4
X-ray Spectra, 30-200 kvp.
Box 4 Folder 5
4-valve diagram.
Box 4 Folder 6
3-phae diagram.
Box 4 Folder 7
Old Therapy Apparatus.
Box 4 Folder 8
Ladder-contrast diagrams (Wikey 3).
Box 4 Folder 9
Two ladder films, high and low contrast.
Box 4 Folder 10
Slides for Speech (1).
Box 4 Folder 11
Slides for Speech (2).
Box 4 Folder 12
Slides for Speech (1).
Box 4 Folder 13

Print, Suggest