 ... summer days and over barren ground. Isolated hills, especially short or conical ones, should be avoided during warm still days, for on such occasions their sides are certain to be warmer than the adjacent atmosphere at the same level, and hence to...  Congressional Serial Set - Стр. 2601913Полный просмотр - Подробнее о книге
 | 1912 - Страниц: 674
...be warmer than the adjacent atmosphere at the same level, and hence to act like so many chimneys in producing updrafts. Rising air columns occur less...portion of the day, and practically absent before sun rise, and at such times as the sky is wholly covered with clouds. AERIAL CATARACTS The aerial cataract... | |
 | 1912 - Страниц: 496
...be wanner than the adjacent atmosphere at the same level, and hence to act like so many chimneys in producing updrafts. Rising air columns occur less...the day, and practically absent before sunrise, and nt such times as the sky is wholly covered with clouds. AERIAT. CATARACTS The aerial cataract is the... | |
 | Smithsonian Institution. Board of Regents - 1913 - Страниц: 920
...especially short or conical ones, should be avoided during warm still days, for on such occasions their sides are certain to be warmer than the adjacent atmosphere...free-air cataract and the surface cataract. The former is the counterpart of the aerial fountain and is most likely to occur at the same time. It is seldom rapid... | |
 | Smithsonian Institution. Board of Regents - 1913 - Страниц: 902
...should be avoided during warm still days, for on such occasions their sides are certain to be wanner than the adjacent atmosphere at the same level, and...free-air cataract and the surface cataract. The former is the counterpart of the aerial fountain and is most likely to occur at the same time. It is seldom rapid... | |
 | 1918 - Страниц: 172
...be warmer than the adjacent atmosphere at the same level, and hence to act like so many chimneys in producing updrafts. Rising air columns occur less...forenoon than in the hotter portion of the day, and are practically absent before sunrise and at such times as the sky is wholly covered with clouds. Air... | |
 | William Jackson Humphreys - 1920 - Страниц: 690
...to be warmer than the adjacent atmosphere at the same level, and hence act like so many chimneys in producing updrafts. Rising air columns occur less...forenoon than in the hotter portion of the day, and are practically absent before sunrise and at such times as the sky is wholly covered with clouds. Although,... | |
 | William Jackson Humphreys - 1920 - Страниц: 690
...They are also less frequent during the early forenoon than in the hotter portion of the day, and are practically absent before sunrise and at such times as the sky is wholly covered with clouds. Although, as just explained, rising currents are certain to be more or less turbulent and " bumpy,"... | |
 | Smithsonian Institution. Board of Regents - 1913 - Страниц: 884
...be warmer than the adjacent atmosphere at the same level, and hence to act like so many chimneys in producing updrafts. Rising air columns occur less...free-air cataract and the surface cataract. The former is the counterpart of the aerial fountain and is most likely to occur at the same time. It is seldom rapid... | |
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