The Kaleidoscope, Its History, Theory and Construction with Its Application to the Fine and Useful ArtsJ. Murray, 1858 - 189 Seiten |
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Seite 60
... brass or any other tube , so as to form an angle of 45 ° , 36 ° , 30 ° , or any even aliquot part of a circle . In order to do this with perfect accuracy , direct the tube containing the reflectors to any line , such as m n , Fig . 2 ...
... brass or any other tube , so as to form an angle of 45 ° , 36 ° , 30 ° , or any even aliquot part of a circle . In order to do this with perfect accuracy , direct the tube containing the reflectors to any line , such as m n , Fig . 2 ...
Seite 61
... brass cap next the eye may be brought as near as possible to E. When the plates have the same breadth at both ends , the angular point E will be near the lower circumference of the tube , as it is at o ; and in this case it is necessary ...
... brass cap next the eye may be brought as near as possible to E. When the plates have the same breadth at both ends , the angular point E will be near the lower circumference of the tube , as it is at o ; and in this case it is necessary ...
Seite 63
... brass ; and is kept in its place by burnishing down the end of the tube . The eye being placed at the other end of the instrument , the observer turns the whole round in his hand , and perceives an infinite variety of beau- tiful ...
... brass ; and is kept in its place by burnishing down the end of the tube . The eye being placed at the other end of the instrument , the observer turns the whole round in his hand , and perceives an infinite variety of beau- tiful ...
Seite 64
... brass , m n , which moves easily upon the tube a b c d , and is kept in its place by a shoulder of brass on each side of it . A brass cell , M N , is then made to slip tightly upon the moveable ring m n , so that when the cell is turned ...
... brass , m n , which moves easily upon the tube a b c d , and is kept in its place by a shoulder of brass on each side of it . A brass cell , M N , is then made to slip tightly upon the moveable ring m n , so that when the cell is turned ...
Seite 68
... brass wire , of coloured foils , and grains of spelter . In selecting transparent objects , the greatest care must ... brass rings into which the transparent and the grey or ground plates of glass are burnished , should be so great that ...
... brass wire , of coloured foils , and grains of spelter . In selecting transparent objects , the greatest care must ... brass rings into which the transparent and the grey or ground plates of glass are burnished , should be so great that ...
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The Kaleidoscope, Its History, Theory and Construction with Its Application ... Sir David Brewster, Sir Keine Leseprobe verfügbar - 2015 |
The Kaleidoscope, Its History, Theory and Construction With Its Application ... David Brewster Keine Leseprobe verfügbar - 2015 |
The Kaleidoscope, Its History, Theory and Construction with Its Application ... David Brewster Keine Leseprobe verfügbar - 2018 |
Häufige Begriffe und Wortgruppen
A O B aliquot angle angular aperture appear applied arranged beautiful becomes brass centre CHAPTER circle circular colours combination complete composed consequence consider consists construction containing created described designs direct distance edges Edition effect equal exhibited extremity field figure fixed follows formed four fragments give given glass greater half hand Hence inches incidence inclination increase instrument intensity inverted Kaleidoscope length lens less light m n o p manner means metallic method mirrors motion move necessary object object-box observer obtained optical pair passing pattern perfect perfectly picture pieces placed plane plates polygon position possible Post 8vo preceding presented principles produced rays reflected images reflectors reflexion regular removed ring round screw Second sector seen by direct shown side similar simple situated square stationary surface symmetrical tion transparent tube various Vols whole
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