On the Connexion of the Physical SciencesJ. Murray, 1858 - 523 pages |
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Page 161
... spectrum , not only with blue glass but with a variety of coloured media , Sir David Brewster , so justly celebrated for his optical discoveries , is of opinion that the solar spectrum consists of three primary colours , red , yellow ...
... spectrum , not only with blue glass but with a variety of coloured media , Sir David Brewster , so justly celebrated for his optical discoveries , is of opinion that the solar spectrum consists of three primary colours , red , yellow ...
Page 162
... spectrum , Sir John Herschel has discovered a set of very dark red rays beyond the red extremity of the spectrum which can only be seen when the eye is defended from the glare of the other colours by a dark blue cobalt glass . He has ...
... spectrum , Sir John Herschel has discovered a set of very dark red rays beyond the red extremity of the spectrum which can only be seen when the eye is defended from the glare of the other colours by a dark blue cobalt glass . He has ...
Page 163
... spectrum which also maintain a fixed position . Among the dark lines , M. Fraunhofer selected seven of the most remarkable , and determined their distances so accurately , that they now form standard and invariable points of reference ...
... spectrum which also maintain a fixed position . Among the dark lines , M. Fraunhofer selected seven of the most remarkable , and determined their distances so accurately , that they now form standard and invariable points of reference ...
Page 164
... spectrum of a lamp , and generally of all white flames , none of the defective lines are found ; so all such flames contain rays which do not exist in the light of the sun or stars . Brilliant red lines appear in the spectrum pro- duced ...
... spectrum of a lamp , and generally of all white flames , none of the defective lines are found ; so all such flames contain rays which do not exist in the light of the sun or stars . Brilliant red lines appear in the spectrum pro- duced ...
Page 165
... extinguish one another , by their union , when accidental ; and also that the com- bination of all the tints of the solar spectrum produces white light if they be from a direct impression on the SECT . XIX , 165 ACHROMATIC TELESCOPE .
... extinguish one another , by their union , when accidental ; and also that the com- bination of all the tints of the solar spectrum produces white light if they be from a direct impression on the SECT . XIX , 165 ACHROMATIC TELESCOPE .
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61 Cygni absorbed action appears atmosphere attraction bismuth blue bodies centre centrifugal force chemical circular polarization coloured rings comet consequently copper crystal dark density diamagnetic diameter diminishes direction distance disturbing earth ecliptic effect electricity equal equator ethereal medium excentricity experiments extreme force gravitation greater heat hemisphere increase intensity Jupiter latitude length lines liquid longitude luminous lunar magnetic mass mean meridian metallic miles molecules moon motion move nebula nodal lines nodes NOTE nutation observed optic axis orbit parallax paramagnetic particles passing perihelion period perpendicular phenomena plane polarized light pole position prism produced quantity rays reflected refraction refrangible retrograde motion revolution revolving right angles rotation round satellites Sir John Herschel solar spectrum sound space stars substances sun's surface telescope temperature terrestrial theory tion tourmaline transmitted tricity undulations Uranus vapour velocity vibrations violet visible Voltaic waves wire