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The Ed Muirhead Physics Museum
Photograph Multiple Beam Interference 0.004 in
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The Ed Muirhead Physics Museum
Photograph Multiple Beam Interference 0.008 in
Black and white print of multiple beam interference fringes showing depth of etching -
The Ed Muirhead Physics Museum
Photograph Multiple Beam Interference 0.006 in
Black and white print of multiple beam interference fringes showing depth of etching -
The Ed Muirhead Physics Museum
Phase plate
Rectangular clear glass plate. -
The Ed Muirhead Physics Museum
Microscope Slides
5 glass clear thin slides each with yellow stained circular specimens (111.1 to 111.5) 1 clear blank slide (111.6) -
The Ed Muirhead Physics Museum
Decade Inductance Box, 10 x1mH
Cubic black box with ten brass contacts over which a rotary contact wiper moves; the wiper is rotated by a black knob.Inscribed on top: “Inductance”, “Type 17-B”, “10 x 1mH”, “Muirhead & Co. Ltd No. 133549”, “PI 111”. Burnt in white on front: “MUIRHEAD”. Label on front: “Purchased by UNIVERSITIES COMMISSION” -
The Ed Muirhead Physics Museum
Decade Inductance Box, 10 x0.01H
Cubic black box with ten brass contacts over which a rotary contact wiper moves; the wiper is rotated by a black knob.Inscribed on top: “INDUCTANCE Type 17-C”, “10 x 0.01H”, “Muirhead & Co. Ltd No. 126967”, “PI 111”. On front: “MUIRHEAD”. Label: “Purchased by UNIVERSITIES COMMISSION” -
The Ed Muirhead Physics Museum
Decade Inductance Box, 10 x0.1H
Cubic black box with ten brass contacts over which a rotary contact wiper moves; the wiper is rotated by a black knob.Inscribed on top: “INDUCTANCE Type 17-D”, “10 x 0.01H”, “Muirhead & Co. Ltd No. 126020”. On front: “MUIRHEAD”. Label: “Purchased by UNIVERSITIES COMMISSION” -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions, with R.L. Abbey
Refer to Cat No 141 for full details. Black and white photo shows Ray Abbey looking through telescope of optical spectrometer. Duplicate copy of Cat no 141; in OMP Album Vol 2 #21. In ink on lower left hand corner: “21”. Inscribed on back in pencil: “No. 21 R.L.ABBEY” -
The Ed Muirhead Physics Museum
Photograph Optical Munitions, with F. Caldwell
Part of a series of optical munition snapshots 1940-1947. Refer to Cat No 133 for full details. Black and white photo shows Fred Caldwell looking through optical instrument. Duplicate copy of Cat no 133; in OMP Album Vol 1 #13.In ink on lower left hand corner : “13”. Inscribed on back in pencil: “No. 13 FRED CALDWELL” -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions with R. Caldwell
Part of a series of optical munition snapshots 1940-1947. Refer to Cat No 146 for full details. Black and white photo shows Bob Caldwell cutting with a diamond saw through a sandwich of optical glass . Duplicate copy of Cat no 146; in OMP Album Vol 2 #26. In ink on lower left hand corner : “26”. Inscribed on back in pencil: “No. 26 ROBERT CALDWELL” -
The Ed Muirhead Physics Museum
Photograph Optical Munitions : Director
Part of a series of optical munition snapshots 1940-1947. Refer to Cat No 134 for full details. Black and white photo of optical instrument “director”. Duplicate copy of Cat no 134; in OMP Album Vol 1 #14.In ink on lower left hand corner : “14”. Inscribed on back in pencil: “No. 14” -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions with E.R. Johnson
Part of a series of optical munition snapshots 1940-1947. Refer to Cat No 138 for full details. Black and white photo shows E R Johnson performing (presumably) test of optical specimen. Duplicate copy of Cat no 138; in OMP Album Vol 1 #18 .In ink on lower left hand corner : “18”. Inscribed on back in pencil: “No. 18 E.R. JOHNSON” -
The Ed Muirhead Physics Museum
Photograph Optical Munitions: Optical Flat
Part of a series of optical munition snapshots 1940-1947. Refer to Cat No 137 for full details. Black and white photo of optical flat in de luxe case with certificate: “GLASS OPTICAL FLAT, made by Natural Philosophy Laboratory, Melbourne University” Number 18. Accuracy of surface flat within .000,001 inch .... Issued by (signd) T.H.L. Feb 19, 1941. Duplicate copy of Cat no 137; in OMP Album Vol 1 #17.In ink on lower left hand corner : “17”. Inscribed on back in pencil: “No. 17” -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions with E.H.S. Burhop
Part of a series of optical munition snapshons 1940-1947. Refer to Cat No 142 for full details. Black and white photo shows Eric Burhop operating a radiation pyrometer ....with possibly a vacuum furnace? Duplicate copy of Cat no 142; in OMP Album Vol 2 #22 .Melbourne University”In ink on lower left hand corner : “22”. Inscribed on back in pencil: “No. 22 E.H.S. BURHOP” -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions with W.G. Kannuluik
Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of W.G. Kannaluik operating an Abbe refractometer.. (For 122.2 see record no 273: ditto as for 122.1 ... photo of TH Laby) In ink on lower left hand corner : “1”. -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions with W.E. Agar
Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of W.E.Agar manipulating an apparatus (possibly a sort of pantograph)In ink on lower left hand corner : “3”. -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions with Fred Caldwell
Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of Fred Caldwell operating a stereoscope.In ink on lower left hand corner : “4”. -
The Ed Muirhead Physics Museum
Photograph, Optical Munitions with G.F. Dainty
Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of G.F. Dainty (with equipment unidentifiable)In ink on lower left hand corner : “5”. -
The Ed Muirhead Physics Museum
Periscope, Optical munitions : part of prototype tank
Cylindrical tube piece of machinery with lens and coated in olive green enamel. Gauge measure visible. -
The Ed Muirhead Physics Museum
Periscope, Optical munitions : part of prototype tank
Metal engineering piece showing circular measuring dial. Other dials visible. Lens also included. -
The Ed Muirhead Physics Museum
Electrometer, string T.H. Laby
Electrometer with black metal rectangular base and brass instrumentation. Base stands on three base legs. Optical telemicroscope is missingPlaque: “The Cambridge Scientific Instrument Co. Ltd Cambridge England No. 8626” -
The Ed Muirhead Physics Museum
Heliostat, Silbermann (and small mirrror)
Information sheet next to object details history, purpose and use. A pillar was constructed for the instrument in 1863.Heliostat consisting of brass cylindrical body on metal stand.Engraved on face: “J.C. Silbermann Invleur Tuit por J.Dubosq i Paris” “No. 119” -
The Ed Muirhead Physics Museum
Magnetic Declination Instrument, Kew Pattern
Declination instrument consisting of metal horizontal cylinder erected on brass three legged stand. A wooden rectangular box forms part of the instrument from which a horizontal telescope emerges (measurement of geographical meridian) and a vertical glass tube containing the suspension for the hollow magnet.Engraved on cylinder: “Elliott Bros London No.71” -
The Ed Muirhead Physics Museum
Magnetic Dip Circle
Dip circle consists of a brass cylinder with two glass flat end-windows, containing a centrally mounted magnetic needle free to rotate about its supporting axis in a vertical plane. The needle , when at rest is arrested by a trunnion from which the needle can be raised by means of external knob. Very close to the needle is mounted the vertical circular scale. Two magnifiers are mounted at the end of a brass “diameter’ which can be rotated so as to read off the angular positions of both ends of the needle after being set up. Graduated horizontal scale on the base. Spirit level mounted. Tribach base.Engraved on base: “Robinson 38 Devonshire Street Portland Place London” -
The Ed Muirhead Physics Museum
Magnetic Dip Circle
Dip circle has much the same elments as in the previous model ( cat. no.81), except the brass cylinder is replaced by a mahogany box with two end windows. Tribrach base is fixed into a wooden sheet ( maybe for ease of carrying in the field).Label: “Nat Phil Lab No. Univ. of Melb” Magnets inscribed “Magnets for dip” -
The Ed Muirhead Physics Museum
Electrometer, Quadrant Elliot
Brass quadrant electrometer consists of four quarter-cylindrical brass boxes (quadrants ) each mounted on a glass insulating pillar. The whole is housed within an electrostatic shield (Faraday cage) - a beehive shaped wire cage enclosure (aka a “bird cage”). The quadrants and cage stand on a round base platform on three legs with levelling screws (tribach base?). Arising from the platform is a separate vertical rod arises from the periphery and terminates over the axis of cylindrical symmetry and from which provision is made for a conducting suspension fibre which supports the horizontal “paddle” which is free to rotate within the cylindrical cavity of the four quadrants. The suspension and paddle are unfortunately missing.Label on front: “Natural Philosophy Laboratory No. University of Melbourne” Engraved on front: “Elliott Bros London” -
The Ed Muirhead Physics Museum
Galvanometer,Thomson (suspended magnet)
Brass and glass case enclosing two sets of coils; surmounted by a vertical rod on which a compensating (?) magnet may be moved either vertically or rotated in a horizontal plane; 3 levelling screws and spirit level.Engraved on top of cylinder: “Nalder Bros and Co., Westminster No. 36521” -
The Ed Muirhead Physics Museum
Abacus
Wooden rectangular abacus with 13 rods. Each rod is divided by a wooden bar. On top part of the rod are 2 wooden discs, on the bottom part are 5 wooden discs. For operation details see Cat. no 87Label: “Betty Laby” -
The Ed Muirhead Physics Museum
DESK CALCUMETER Calculator
The “Standard Desk Calcumeter” consisting of metal rectangular body with six dials and a reset button. Two legs are used to stand Calcumeter at a convenient angle for manipulation..Engraved on front: “The Standard Desk Calcumeter” On side: “77” “120675” On side: “H.N. Morse Trenton N.J.” On long side: “Pat`d Dec.17`01”