 Not unfrequently in the mountain districts broad beams apparently of bluish light may be seen extending from the zenith downwards, converging and narrowing as they approach the horizon. This ray-like appearance is very similar to that seen before sunrise...  Nature - Page 330redigeeritud poolt - 1878Full view - About this book
 | 1877 - 588 lehte
...bluish light, may be seen extending from the zenith downwards, converging as they approach the horizon. The spaces between them have the ordinary illumination of the rest of the sky. If we suppose, as is frequently the case, that the lower strata of air are colder than the upper, the reflection spoken... | |
 | 1876 - 630 lehte
...bluish light, may be seen extending from the zenith downwards, converging as they approach the horizon. The spaces between them have the ordinary illumination of the rest of the sky. If we suppose, as is frequently the case, that the lower strata of air are colder than the upper, the reflection spoken... | |
 | 1876 - 298 lehte
...bluish light, may be seen extending from the zenith downwards, converging as they approach the horizon. The spaces between them have the ordinary illumination of the rest of the sky. If we suppose, as is frequently the case, that the lower strata of air are colder than the upper, the reflection spoken... | |
 | James Samuelson, Henry Lawson, William Sweetland Dallas - 1876 - 508 lehte
...bluish light, may be seen extending from the zenith downwards, converging as they approach the horizon. The spaces between them have the ordinary illumination of the rest of the sky. If we suppose, as is frequently the case, that the lower strata of air are colder than the upper, the reflection spoken... | |
 | 1876 - 848 lehte
...bluish light, may be seen extending from the zenith downwards, converging as they approach the horizon. The spaces between them have the ordinary illumination of the rest of the sky. If we suppose, as is frequently the case, that the lower strata of air are colder than the upper, the reflection spoken... | |
 | Sir Norman Lockyer - 1876 - 612 lehte
...bluish light may be seen extending from the zenith downwards, converging as they approach the horizon. The spaces between them have the ordinary illumination of the rest of the sky. If we suppose, as is frequently the case, that the lower strata of air are colJír than the upper, the reflexion spoken... | |
 | Samuel Pasfield Oliver - 1881 - 468 lehte
...blueish light, may be seen extending from the zenith downwards, converging as they approach the horizon. The spaces betwe.en them have the ordinary illumination of the rest of the sky. If we suppose, as is frequently the case, that the lower strata of air are colder than the upper, the reflexion spoken... | |
 | 1876 - 610 lehte
...great interest but not so striking in character as the above, admits of an equally simple explanation. Not unfrequently in the mountain districts broad beams...angles and at a considerable elevation above it), the refraction spoken of in the case of Adam's Peak will be downwards instead of upwards. If, too, the... | |
 | Institute of Physics and the Physical Society - 1876 - 674 lehte
...not so striking in character as the above, admits of an equally simple explanation. Not uufrequently in the mountain districts broad beams apparently of...angles and at a considerable elevation above it), the refraction spoken of in the case of Adam-s Peak will be downwards instead of upwards. If, too, the... | |
 | 1876 - 628 lehte
...great interest but not so striking in character as the above, admits of an equally simple explanation. Not unfrequently in the mountain districts broad beams...angles and at a considerable elevation above it), the refraction spoken of in the case of Adam's Peak will be downwards instead of upwards. If, too, the... | |
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