 If a beam of daylight be admitted into a dark room by a crevice ifa of an inch broad, and received by the eye at the distance of 10 or 12 feet, through a prism of flint glass, free from veins, held near the eye, the beam is seen to be separated into the...  Handbuch der Spectroscopie - Side 7af Heinrich Kayser - 1900Fuld visning - Om denne bog
 | Royal Society (Great Britain) - 1802 - 638 sider
...the eye at the distance of 10 or 12 feet, through a prism of flint-glass, free from veins, held near the eye, the beam is seen to be separated into the four following colours only, red, yellowish green, blue, and violet; in the proportions represented in Fig. 3. The line A that bounds... | |
 | 1803 - 572 sider
...eye at the distance of lo or 12 feet, through a prism of flint glass, free j "ram veinr, held near the eye, the beam is seen to be separated into the four following colours only, red, yellowish green, blue, and violet.' — ' The position of the prism in which the colours are most... | |
 | 1823 - 506 sider
...daylight be admitted into a dark room by a crevice l-20th of an inch broad, and received by the eye at the distance of 10 or 12 feet, through a prism of flint glass, free from veins, held near the eye, the beam is seen to be separated into the four following colours only : red, yellowish-green,... | |
 | 1823 - 506 sider
...daylight be admitted into a dark room by a crevice l-20th of an inch broad, and received by the eye at the distance of 10 or 12 feet, through a prism of flint glass, free from veins, held near the eye, the beam is seen to be separated into the four following colours only : red, yellowish-green,... | |
 | 1875 - 1140 sider
...into a dark room by a crevice ?'j of an inch broad, and received by the eye at the distance of 10 to 12 feet through a prism of flint glass, free from veins, held near the eye, the beam is seen to be separated into the four following colours only, red, yellowish green,... | |
 | Sir Norman Lockyer - 1874 - 734 sider
...at the distance of tenor twelve feet, through a prism of flint glass free from •veins, held near the eye, the beam is seen to be separated into the four following colours only : red, yellowish-green, blue, and violet ; in the proportions represented in Fig. 43. The line A that... | |
 | Sir Norman Lockyer - 1874 - 748 sider
...dark room by a crevice Tb of an inch broad, and received by the eye, at the distance of ten or twelve feet, through a prism of flint glass free from veins, held near the eye, the beam is seen to be separated into the four following colours only : red, yellowish-green,... | |
 | Robert Routledge - 1881 - 748 sider
...eye at the distance of ten or twelve feet through a prism of flint-glass, free from veins, held near the eye, the beam is seen to be separated into the four following colours only : red, yellowish green, blue, and violet, in the proportions represented in Fig. 219. " The line A... | |
 | United States. Congress. House - 1883 - 896 sider
...pure spectrum. Wollaston says: "If a beam of daylight be admitted into a dark room by a crevice l-20th of an inch broad and received by the eye at a distance...a prism of flint glass, free from veins, held near the eye, the beam is seen to be separated into the four following colors only: red, yellowish-green,... | |
 | Peter Guthrie Tait - 1884 - 298 sider
...the eye at the distance of 10 or 12 fejet, through a prism of flint-glass, free from veins, held near the eye, the beam is seen to be separated into the four following colours only, red, yellowish-green, blue, and violet, in the proportions represented. . . . " The line A that bounds... | |
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