Quarterly Journal of Science: 1870, Том 7John Churchill and Sons, 1870 |
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Страница 4
... inches from N to N ' . The average length of a luminous wave , say that of green light , is only the 100th part of an inch from N to N ' . This great difference must not stagger us in tracing out our analogy . The element of size does ...
... inches from N to N ' . The average length of a luminous wave , say that of green light , is only the 100th part of an inch from N to N ' . This great difference must not stagger us in tracing out our analogy . The element of size does ...
Страница 15
... inches . 52 461 / 42 39 35 31 27 26 Ratio . 100 89 80 75 67 60 53 50 8825888 Putting together the two ratios , the following remarkable cor- respondence at once comes out : - RATIO OF WAVE - LENGTHS OF NOTES COMPARED TO RATIO OF WAVE ...
... inches . 52 461 / 42 39 35 31 27 26 Ratio . 100 89 80 75 67 60 53 50 8825888 Putting together the two ratios , the following remarkable cor- respondence at once comes out : - RATIO OF WAVE - LENGTHS OF NOTES COMPARED TO RATIO OF WAVE ...
Страница 29
... inches aperture , with clockwork , and also an excellent Dolland , of 4 inches aperture , equatorially mounted , but without clockwork . It was concluded that on account of the risk of local clouds it would be desirable to take all ...
... inches aperture , with clockwork , and also an excellent Dolland , of 4 inches aperture , equatorially mounted , but without clockwork . It was concluded that on account of the risk of local clouds it would be desirable to take all ...
Страница 30
... inches , and 50 inches focus ) to 1 inch , and to use a diaphragm slide of th inch aperture , in order to get a proper exposure when the solar image was enlarged from 6 inch ( its diameter at the principal focus of the objective ) to 2 ...
... inches , and 50 inches focus ) to 1 inch , and to use a diaphragm slide of th inch aperture , in order to get a proper exposure when the solar image was enlarged from 6 inch ( its diameter at the principal focus of the objective ) to 2 ...
Страница 31
... inch aperture , 9 feet focal length , was under the charge of Professor A. M. Mayer , Ph.D. , and Mr. O. H. Kendall . It was stationed at Burlington , 40 ° 48 ′ 17 ′′ N. , Oh . 56m . 13s . West of Washington . By , measurements of the ...
... inch aperture , 9 feet focal length , was under the charge of Professor A. M. Mayer , Ph.D. , and Mr. O. H. Kendall . It was stationed at Burlington , 40 ° 48 ′ 17 ′′ N. , Oh . 56m . 13s . West of Washington . By , measurements of the ...
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