Showing 14 items matching "diffraction"
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The Ed Muirhead Physics MuseumEngine, Grayson Diffracting Grating Ruling
Made by Henry Grayson at home with the help of William Stone. Used to rule diffraction gratings, achieving excellent results of 2cm squared rulings on speculum metal. The instrument was transferred to Melbourne University, and used by Professor Lyle from 1917-30. Information attached to the front of object and statistical information on stand on top of object.Grayson Diffraction Grating Ruling engine consisting of multiple complex chrome and brass components. Enclosed in specially made glass and wooden display box. -
The Ed Muirhead Physics MuseumRowland Diffraction Grating & Goniometer, Kirkpatrick & Co., London, ?1930s
Speculum metal blanks made by John H. Brashear(1840-1920) from John Hopkins University in Baltimore, Diffraction Grating made by Prof. H.A. Rowland, [School of Physics, University of Melbourne.] No known publications using the Eagle mounting. May have been used exclusively for practical work in Physics III.Diffraction grating of 14,437 lines/inch x 3 1/4 inch. Set in goniometer. “The grating is a ruling of 14,437 lines/inch by Rowland, on a concave spherical speculum mirror of 4-1/2 inch aperture and 10 ft radius. First order dispersion is 5.5 A per mm.” (see RTW Bigham: ‘Concave Roland Grating: Eagle Mounting” in ‘Inspection of New Wing’; Appendix B5 , Vol 2 of Laby :CollectedPapers. The remnants of the Eagle Mounting, featuring a 4 inch tube x 10 ft long, presently uncatalogued, lies on the roof of a display cabinet in the PSB basement open cage-store.Kirkpatrick & Co., Londondiffraction grating, rowland & goniometer -
The Ed Muirhead Physics Museum
Glass microscoepe slide, 3 Abbe calibration microrulings
Glass slide with three “silver ” circles enclosed in small hinged brown leather box lined with black velvet. No calibration ruling details available.On box: “Diffraction splatte nach ABBE C.Zeiss Jena” -
The Ed Muirhead Physics Museum
Microscope rulings, 7 with box
7 flat discs (battery like) with diffraction gratings (55.1-55.7). surface rectangular rulings extend mostly 15mm . stored in specially converted metal hinged cigarette box (55.8) with wooden compartments -
The Ed Muirhead Physics Museum
Diffraction Grating , Thorpe with box
Thorpe’s Transparent replica of Rowland Metal Diffration Grating; 14,484 lines/inch. Consisting of glass rectangular specimen, approx. 5 x 3.5 cm stored in hinged black velvet lined box . Grating = 98.1 Box = 98.2Label on grating: “The Surface of the grating must not be touched”. “THORP’s Transparent Replica of Rowland Metal Diffraction Grating 1st Q 14484 lines to the inch” -
The Ed Muirhead Physics Museum
Diffraction Grating with cover
Diffraction grating, 1-3/4in x 1in ruled on 2-1/4 in. disk of speculum metal, recessed in 2-1/2 in. dia. brass holder, itself mounted on a flat, round base with three levelling screws. Cylindrical brass lid. -
The Ed Muirhead Physics Museum
Slide with box and lid
Slide showing Wallace’s Replica of Rowland’s Plane.Typed label on slide: “Wallace’s Replica of Rowland’s Grating 14500 lines to the inch Central Scientific Company, Chicago ILL” Label on box: “Diffraction Grating (Wallace) 14500 lines/inch” -
The Ed Muirhead Physics Museum
X-Ray Spectrograph, Laby/Hilger
The spectrograph employs the principle of single crystal Bragg X-Ray Diffraction to measure wavelengths by interpolation from accepted standard lines. It is suitable for the identification and determination of the charateristic emissions of elements and thus for X-Ray spectrum analysis. The instrument was manufactured by ADAM HILGER Ltd. to the design of Professor Laby and is the best preserved instrument surviving from his research activity. A full description is given in the Hilger Pamphlet with the instrument; alternatively see duplicate in Appendix A5,A6 in Vol 2 of Laby ‘s COLLECTED PAPERS.Laby Bibliography by R W Home “Physics in Australia 1945” pp 106-08; also reproduced by permission as Appenix C in “A Man Ahead of his TImes”By E G Muirhead References. nos 45, 41, 47, 52, 53 -
The Ed Muirhead Physics MuseumX-Ray Spectrograph, Laby/Hilger
The spectrograph employs the principle of single crystal Bragg X-Ray Diffraction to measure wavelengths by interpolation from accepted standard lines. It is suitable for the identification and determination of the charateristic emissions of elements and thus for X-Ray spectrum analysis. The instrument was manufactured by ADAM HILGER Ltd. to the design of Professor Laby and is the best preserved instrument surviving from his research activity. A full description is given in the Hilger Pamphlet with the instrument; alternatively see duplicate in Appendix A5,A6 in Vol 2 of Laby ‘s COLLECTED PAPERS. -
The Cyril Kett Optometry MuseumBook, Optice: sive de Reflexionibus, Refractionibus, Inflexionibus & Coloribus Lucis Libri Tres, 1706 (exact)
This 300 year old book deals with the theory of light and colour and with investigations of the colours of thin sheets, 'Newton's rings', and diffraction of light. Newton uses a wave theory of light and his corpuscular theory to explain his observations. Sir Isaac Newton (1643-1727) was a great figure in the history of optical science. His classic 'Opticks' was first published in English in 1704. This Latin edition of 1706 was published to satisfy a wider scientific audience in Europe. Newton was Lucasian Professor at Cambridge 1669-1693 and a fellow of Trinity College. He achieved fame as a creative mathematician and for his law of universal gravitation which explains planetary motions. He retired from research in 1693 to become a government official in London.This book is highly significant as a milestone in the study of optics. Although not a very rare book, only one other copy is listed by WorldCat in an Australian institution.Latin edition of Newton's 'Optics' translated by Samuel Clarke. This copy is bound in full calf leather of the period, 348 pages, with fold-out figures plus a 24 page appendix 'Enumeratio linearum tertii ordinis' and a 43 page appendix 'Tractus de quadratura curvarum'. It is in outstandingly good condition.Inscribed on the fly leaf in pencil is that this is the 2nd edition, the first in Latin, and that Newton gave Clarke 500 pounds for the translation.refraction, optics, newton, reflection -
Federation University Historical CollectionBook, Nathaniel Frank, Introduction to Electricity and Optics, 1950
... diffraction ...Dark Blue synthetic hard caver book of 440 pages with gold lettering embossed on the spine. non-fictionelectricity, optics, force, electrostatic, charg and capacity, electric currents, magnetic field, alternating current circuits, electromagnetic waves, radiation, conduction, dielectrics, geometrical optics, interference, heat radiation, diffraction -
The Ed Muirhead Physics Museum
Diffraction Grating Scribe
Small cylindrical metal rod with diamond point embedded at one end and a brass circle with 50 divisions and a pointer affixed at the other end to define the orientation of the rod/diamond point. Presumably used with one of the Grayson or Stone engines.On face: “0 10 20 30 40” -
The Ed Muirhead Physics Museum
Diffraction grating on glass, Grayson
Grayson ruling consisting of glass rectangular slab stored in brown cardboard box with lid and supported by cotton wool. 99.1= Ruling, 99.2 = box, 99.3 = box lidHand written on box lid: “Grayson Ruling (Glass)” -
The Ed Muirhead Physics Museum
Diffraction grating on glass, Grayson
Grating made of glass rectangular slab stored in red cardboard box with lid and black lining. 15,000 lines/inch 100.1 = box lid, 100.2 = box, 100.3 = gratingOn ruling in white ink: “15,000 lines/inch”
