Newton's lantern slide catalogue: section 2 (circa 1920)

43, Museum Street, London, W.C.1. w OPTICAL PHENOMENA. A new series of Blidee from negatives made direct from the actual objects, by _;3 -5 Mr. W, B. Csorr, of Winchester College. - ' : “ Plain Slides, 2s. M. each ; Beautifully Painted, 6s, to 111. each. 1 Fresnel’s Interference from s Bi-prism. 1 Two very narrow elite t the broader baa nar- rower bands. • Diffraction. Four small circular holes: a dlf- ferent phenomenon from that of th« Very narrow openings. I opaque circular screen. * Pj? r * et J on Ol Id. piece. Argo's bright centre. T Diffraction. Needle points: tha smaller needle . has the larger bright centre. ■ Diffraction . Eye ol Needle. 10 Diffraction : Wire Cause. 11 Diffraction. Perforated Zinc: to show the bands In the shadow, U Diffraction. Perforated Zinc: to show the bands in the spaces. leas than atr. 14 Group* of circle* for diffraction screens; much magnified: the original figures are about A, Inch diameter: a part of Bridge's series. II Fraunhofer or Schwerd diffraction from threa ol these figures. It IT II Fresnsl diffraction from these figure#. >' M Telbot'a bands i glass film an object glass. SI Telbot’a bands: glass film an eve piece. 34 Conical refraction. Five examples of the pheflo- . «— ... 0 f 1|£hL menon from five pin-holes ol 91 A Model of the wavMurfece. v JI Caldte In polarised light: rings end brushes. Caldte drcuIsrly^polsrised end dreulsrly tna- H Caldte. The dislocated rings o{ a negatlvs crystal. 39 Concave Salenlte: ring* In polarised light. *n r\... ru . r j ngl in j brushes. two spirals of right-handed quarts. 33 Quarts. Airy's spirals, right and left quarts. 31 Quarts. Shifting hyperbola. .. „ another position. 33 Quarts. Savart'a Bands. 36 Bablnet's Compensator. 17 Nitra: ring* and brushes. 58 .. •• i, another position. 39 Nitra: circularly polarised . <0 ... „ another portion. 41 Nitre j circularly^ polsrlstd: Lewis Wright's 43 Bertrsnd’s Idiocyclophanous prism ol caldta. another position. 44 Idlocyclophanus Topaz. 43 Unannealed Glass in polarised light. 47 Annealed Glass under pressure. 41 Newton's Rings: reflected. 49 „ transmitted. 30 reflected : on a larger seal*. 31 Rings of Tubular calcita t 33 33 four positions. 33 Star of twenty-four rays; Internal reflection |* ' % 37 Tfc# Human Syt. Bsqk part of human eyet - showing nerve trunk and fibrae, Ir and punctum ccecum * _ (I „ Crystalllna lens ol human eye. r .M 31 „ The lens more highly magnified to show onion structure. M ,, The human retina, showing - numerous layer*. J II „ The human retlnat tp show mort,, ; . -rff distinctly the rods and cones “ ■ H ETC. Sea also ** Industries," Section 7 of this Catalogue. PHOTOGRAPHS OF EXPERIMENTS WITH LIGHT RAYS. tB 1IVI REFLECTION IN MIRRORS, REFRACTION BY LENSES By Dr. H. J. OOSTING. Plain Slides, 2s. 6d. each. t* These Slides, like those in the above set (Q), are photographed direct from the apparatus sed In the experiment, and give a far better idea than a mere diagram. They are really almost essential where apparatus i3 not available. Nos. 17 to 25— REFRACTION. 17 Parallel rays by a convex lens. ;gff| Nee. 1 to 16—REFLECTION. .Ulana Mirror. v2 Concave Spherical Mirror.—Luminous point b the centre ol curvature. '8 Slightly turned, d Incident Ravi parallel. S Slightly turned. Incident raya parallel. , 6 Luminous point coinciding with principal locus. ~ 7 ., ,. „ „ mirror turned. 8 Luminous point at a distance greater than the 9 Luminous point at a smaller distance. 10 Luminous point at a distance smaller then the focal length. *■ „ I In convex spherical minor. Incident raya ... parallel. 3 Luminous point on axis of mirror. 'S. Light rays pasting surface of separation between gn sir and water. 4 Light rays passing through glass cell filled with water. UL Light rays passing through glass cell filled with r»n. Carbon Bi-sulphide. 16 Total reflection on surface between water and air, IS Rays by a convex lens. Luminous point la prin- -32 eipal focus. 10 Luminous point b principal axis at a di stant^ ’ twice the focal length. 20 Luminous point at a distance twice the focal - j length but not b principal axis. 21 At a distance from lens greater than twice the -■ local length. - - 22 Lumbous pobt at a distance greater than one ’ and smaller than twice the focal length. . . 23 Lumbous pobt at a distance smaliertnaa the - i J focal length. VW-' 24 Rays through Concave Lens. Incident Rays . paralleL 25 Lumbous pobt on principal axis. 26 Course of Rays b Astronomical Telescope. 27 j, ,, ,| M H 28 ,, „ „ Dutch or Galilean Telescope “j SO *’ ” " through objective of Lantef 31 Spherical Aberration.