Showing 9 items
matching diffraction grating
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The Ed Muirhead Physics MuseumRowland Diffraction Grating & Goniometer, Kirkpatrick & Co., London, ?1930s
... Rowland Diffraction Grating & Goniometer...diffraction grating...) from John Hopkins University in Baltimore, Diffraction Grating...Diffraction grating of 14,437 lines/inch x 3 1/4 inch. Set... Hopkins University in Baltimore, Diffraction Grating made by Prof ...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 MuseumDiffraction Grating , Thorpe with box
... Diffraction Grating , Thorpe with box... Diffraction Grating 1st Q 14484 lines to the inch”... Diffraction Grating 1st Q 14484 lines to the inch” Thorpe’s ...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 with cover...Diffraction grating, 1-3/4in x 1in ruled on 2-1/4 in. disk...Diffraction grating, 1-3/4in x 1in ruled on 2-1/4 in. disk ...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
Diffraction Grating Scribe
... Diffraction Grating Scribe... or Stone engines. 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
... Diffraction grating on glass, Grayson..., 99.2 = box, 99.3 = box lid Diffraction grating on glass ...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
... Diffraction grating on glass, Grayson..., 100.3 = grating 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” -
The Ed Muirhead Physics Museum
Engine, Grayson Diffracting Grating Ruling
... Stone. Used to rule diffraction gratings, achieving excellent...Grayson Diffraction Grating Ruling engine consisting... to rule diffraction gratings, achieving excellent results of 2cm ...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 Museum
Microscope rulings, 7 with box
... 7 flat discs (battery like) with diffraction gratings (55.1... discs (battery like) with diffraction gratings (55.1-55.7 ...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
Slide with box and lid
... , Chicago ILL” Label on box: “Diffraction Grating (Wallace) 14500... on box: “Diffraction Grating (Wallace) 14500 lines/inch” Slide ...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”
