The investigation of the x-ray appears early on to have been a priority research topic at the University of Melbourne’s School of Physics. This interest was sparked by the appointment in 1889 of Professor T.R. Lyle. Lyle, who was head of the school until 1915, is thought to have been the first person in Australia to have taken an x-ray photograph. A copy of this photograph can be found in the School of Physics Archive. For this particular experiment Lyle actually made his own x-ray tube. His successor, Professor Laby, continued to work with x-rays. During the 1920s Laby worked on the x-ray spectra of atoms and in 1930 he co-published with Dr. C.E. Eddy, Quantitative Analysis by X-Ray Spectroscopy. Also with Eddy, Laby produced the landmark paper Sensitivity of Atomic Analysis by X-rays. Laby went on to have an x-ray spectrograph of his own design manufactured by Adam Hilger Ltd. (see cat. No. 38). School of Physics, the University of Melbourne Cat. No. 22. Jacqueline Eager Student Projects Placement, Cultural Collections 2005 The original X-ray tubes relied on low pressure operation. The electrons and positive ions are produced in the residual gas. Positive ions are accelerated towards the cathode and release electrons which on hitting the anode produce X-rays. These early gas X-ray tubes operated satisfactory only over a narrow pressure range. Manufacturer’s mark stamped: “PATENTED/ VICTOR/ TRADEMARK/ MADE IN BOSTON U.S.A./ TUNGSTEN” A white circular stamp, stamped near the manufacturer’s mark: “[illegible]TER WIGGH[illegible]” Stamped label: “NAT. PHIL. LAB./ No./ UNIV. OF MELB.” Inscription on the end face of the copper piece: “PAT. SEP 5’ 11 DEC. 30’13/ JUNE 23, 14 NOV. 30.15/ 43835”

White & Gillespie “Dualface” comprehesive slide rule Model 432 In original cloth covered case“Dual face” Comprehensive Slide Rule Model 432 Melbourne > W&G

Black and white photograph of view of lens with measurment and showing view of a field. Duplicate of no 156.On back in pencil: “No. 35 Telescopic Sight” On back and front in ink: “35” Stamped on back: “Information Office, University of Melbourne”

Black and white photograph of inner column of equipment. Duplicate of no

Black and white photograph portrait of J.J. McNeill.On back of image in pencil: “J.J. McNeill”, “3843 Chem Physics CSIRO 1968”

Black and white photograph of two scientists at work (A.C. Goodwin and Peter Law).On front of image in ink: “9” On back of image in pencil: “No. 9 A.C. Goodwin Peter Law” (L to R) On back of image in ink: “9”

Black and white photograph of two scientists (J.B. Willis and P.G. Law) at work on microscopeOn front of image in ink: “31A” On back of image in pencil: “31A J.B. Willis, P.G. Law ” (L to R) On back of image in ink: “31A”

Black and white photograph of male scientist (Kahanine) working on graphic design.On front of image in ink: “31” On back of image in pencil: “No. 31 Kahanine’ On back of image in ink: “31”

Black and white photograph showing male hands preparing glass for fusing. Same photo as 144.On front of image in ink: “24” On back of image in pencil: “No. 24 Glass Preparation for fusing” On back of image in ink: “24”

Black and white photograph showing young man (Notman) working on graphic designs at a draft board.On front of image in ink: “19” On back of image in pencil: “Notman No. 19” On back of image in ink: “19”

Black and white photograph showing Gordon Crickmore using compass. Same photo as 136.On front of image in ink: “16” On back of image in pencil: “No 16 Gordon Crickmore” On back of image in ink: “16”

Black and white photograph Dick Huey at work assembling plate glass for making gla blocks. Same photo as 147On front of image in ink: “27” On back of image in pencil: “No 27” On back of image in ink: “27”

White Castell rectangular slide rule (270.1) stored in clear plastic Faber Castell case (270.2).On slide rule: printed - “Castell”, On case: stamped - “Made in Germany”, in pen - “451”, Paper label: “Castell 57/89”

Plastic white rectangular Castell slide rule (271.1) stored in green lined rectangular case (271.2).On slide rule in green font: “Castell”

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of T.H. Laby holding a gun sight. Catalogued out of order as 122.2 (Photograph temporarily mislaid and repllaced by a P/C)

Black and white photograph of cyclotron machinery in white envelope entitled “”Cyclotron Photographs (Duplicate set)’

Black and white photograph of cyclotron machinery in white envelope entitled “”Cyclotron Photographs (Duplicate set)’

Black and white photograph of bench with cyclotron equipment in white envelope entitled “”Cyclotron Photographs (Duplicate set)

Black and white photograph of bench with cyclotron equipment in white envelope entitled “”Cyclotron Photographs (Duplicate set)

Black and white photograph of bench with cyclotron equipment in white envelope entitled “”Cyclotron Photographs (Duplicate set)

Black and white photograph of cyclotron equipment stored in white envelope entitled “”Cyclotron Photographs (Duplicate set)

Black and white photograph of cyclotron equipment stored in white envelope entitled “”Cyclotron Photographs (Duplicate set) Very similiar to 236

Black and white photograph of cyclotron equipment stored in white envelope entitled “”Cyclotron Photographs (Duplicate set) Very similiar to 235

Black and white photograph of cyclotron equipment stored in white envelope entitled “”Cyclotron - Photographs around the vacuum chamber from J.L. Rouse (Feb 1991)” Very similiar to 238 and 239

Black and white photograph of cyclotron equipment stored in white envelope entitled “”Cyclotron - Photographs around the vacuum chamber from J.L. Rouse (Feb 1991)” Very similiar to 237 and 239

Black and white photograph of cyclotron equipment stored in white envelope entitled “”Cyclotron - Photographs around the vacuum chamber from J.L. Rouse (Feb 1991)” Very similiar to 237 and 238

Black and white photograph of cyclotron equipment. Man seen standing next to and indicating equipment. Stored in white envelope entitled “”Cyclotron - Photographs around the vacuum chamber from J.L. Rouse (Feb 1991)”

Black and white photograph of cyclotron equipment displayed on bench. Stored in white envelope entitled “”Cyclotron - Photographs around the vacuum chamber from J.L. Rouse (Feb 1991)”