Modern magic lanterns; a guide to the ... - Yesterday Image

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68 MODERN MAGIO LANTERNS.For those who do not care to calculate out for themselves,the following table, abridged from Mr. Lewis Wright'sstandard work on optical projection, is given. The table iscalculated for slides of the usual size.Diameter of disc
;CHAPTER XI.^be Screen anb (Beneral Hrrangements.Given a lantern of first-class power, good slides, and plentyof gas, the brilliancy of the display can be made or marredby the nature of the screen itself upon which the picturesare thrown.One arrangement of lantern screen and audience is thatshown in Pig. 54, the dots representing the audience. Inthis case the screen should be as opaque as possible ; sinceit is wanted to reflect as much as possible of the light fallingupon it ; in fact, the finest screen imaginable under thesecircumstances consists of a smooth plaster wall well whitewashed.This is not often obtainable, and the lanternist hasto put up with a substitute, in the form generally of somekind of sheeting. "When this is the case the stouter andwhiter the sheet the better, since it will reflect more light.If it must have any seams in it they should run horizontallyrather than vertically, and will probably show theirpresence, and, incidentally, the advantage of an opaquescreen, by appearing whiter and more brilliant than the rest.The size of the screen and its position depend largely uponcircumstances. It should on no account be hung too highnothing is more unpleasant than craning back the neck forsome time to gaze at a sheet right above one's head ; for thisreason it should be as far in front of the audience as possible.Screens are also made of canvas faced with a glossy-white,surfaced paper. These cannot be folded, and consequentlyare not so portable in large sizes, and are more expensive.
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In^ f-e'
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Cornell UniversityLibraryThe origin
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HUbrniiiS'OXYGENSiMPIiEXCERTAIN ACT
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HUGHES' SPECIAL BIDNIALWith Solid B
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HUGHES' PATENT BIJOUENLARGINGLANTER
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MODERN MAGIC LANTERNS.
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:MODERNMAGIC LANTERNSA GUIDE TOTHE
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Preface to the First Edition.Some f
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CONTENTS.Chap.I. InteodttctokyII. O
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Modern Magic Lanterns.CHAPTER I.3nt
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INTEODUOTOET.ifeet in diameter, a m
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CHAPTERII.Nearly all the old-fashio
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OIL LAMPS.the other end, which went
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OIL LAMPS.aThey should be trimmed e
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CHAPTER III.^beXimeligbt.The most p
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THE LIMELIGHT. 13be incapable of be
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THE LIMELIGHT. 15in a moment on loo
Page 35 and 36: THE LIMELIGHT. 17is not used to the
Page 37 and 38: HOME-MADE OXYGEN, GAS HOLDBES, ETC.
Page 39 and 40: HOME-MADE OXYGEN, GAS HOLDEES, ETC.
Page 41 and 42: —BOME-MADB OXYQEN, QAfi HOLDBBS,
Page 43 and 44: CHAPTER V.Compteeaeb(Baeee.Most lan
Page 45 and 46: OOMPEESSED GASES. 27with the pressu
Page 47 and 48: COMFBESSED GASES. 29are atmospheres
Page 49 and 50: COMPKESSED GASES. 31for tttmmg on a
Page 51 and 52: —OOMFBESSED QASEB. 33foot, red or
Page 53 and 54: CHAPTEE VI.jetber, 3ncant)escent (5
Page 55 and 56: ETHEE, INCANDESCENT GAS, ACETYLENE,
Page 57 and 58: ETHEB, INOANDSSCEMT QAB, AOEXYLENE,
Page 59 and 60: JETS. 41inch above the top of the w
Page 61 and 62: JETS. 43As the jet plays upon the l
Page 63 and 64: JETS. 45unless the pressure is grea
Page 65 and 66: THE ELEOTBIO LIGHT. 47"Where a very
Page 67 and 68: THE EIiEOTEIO LIGHT. ^9Borland, of
Page 69 and 70: THE ELBOTEIO LIGHT. 61solid. In get
Page 71 and 72: CHAPTER IX.^be XanternBo^i^.The var
Page 73 and 74: THE LANTBEN BODY. ,55above the othe
Page 75 and 76: THE LANTEEN BODY. 57mounted slide i
Page 77 and 78: yhavingTHE LANTEEN BODY. 59by which
Page 79 and 80: THE IiANTEEN BODT. 61Eoss' new Lime
Page 81 and 82: THE OPTIOAIi SYSTEM. 63enclosed by
Page 83 and 84: THE OPTICAL SYSTEM. 65a 4| inch wil
Page 85: THE OPTICAL SYSTEM. 67Perhaps the m
Page 89 and 90: THE SOEEEN AND OENEBAIi AERAKQEMENT
Page 91 and 92: THE SCBEEN AND 6ENEBAL ABBANGEMENTS
Page 93 and 94: CHAPTERXll.Zbe flDanipuIation of tb
Page 95 and 96: THE MANIPULATION OF THE LANTEEN. 77
Page 97 and 98: —THE MANIPULATION OP THE LANTEEN.
Page 99 and 100: MOVING SLIDES AND EFFECTS. 81The pa
Page 101 and 102: MOVING SLIDES AND EFFECTS. 83marked
Page 103 and 104: CHAPTER XIV.Xantern fiyperimente.Th
Page 105 and 106: LANTEBN EXPEBIMEMTS.plate. "When de
Page 107 and 108: LANTERN EXPEBIMENT8. 89Zentmayer's.
Page 109 and 110: LANTEBN EXPEEIMENTS. 91reflector, o
Page 111 and 112: CHAPTEE XV.^be Xantcrn*»Spectrosco
Page 113 and 114: THE LANTEBN-SPEOTEOBOOPE, -POLABISC
Page 115 and 116: THE IiANTBBN-SPEOTBOSCOPB, -POIiABI
Page 117 and 118: THE IiANTEEN-MICEOSOOPE. 99one lant
Page 119 and 120: THE LANTBEN-MICEOSCOPS, 101jet to b
Page 121 and 122: ANIMATED LANTEBN PIOTUEES. 103revol
Page 123 and 124: ANIMATED LANTEBN PIOTUEES. 105point
Page 125 and 126: [antern * =Highest Quality only.[en
Page 127 and 128: INDEX.C.Abaorption, to show, 94Acet
Page 129 and 130: iINDEX. 109Lantern, epectrosoope, 9
Page 131 and 132: INDEXTo the Practical HandbooksPubl
Page 133 and 134: and—';Catalogue .,PracticalPublis
Page 135 and 136: Chas. Sceibneb's Sons, New Ywh.Bunk
Page 137 and 138:
'ofCage;Chas. Scbibnee'b Sons, New
Page 139 and 140:
Chas. Scbibnek's Sons, New YorTc. 9
Page 141 and 142:
'Ohas. Sceibnee's Sons, New Yorle.
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:Ohas. Sceibneb's Sons, New Yorh. 1
Page 145 and 146:
Chas. Scbibnee's Sons, New York. 15
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