Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 82American Philosophical Society, 1940 |
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Сторінка 254
... tracks become helical and if the illuminated region of the chamber is deep the above method loses much of its utility because the track images are not plane . In this case it is convenient to decrease the angle between the axes of the ...
... tracks become helical and if the illuminated region of the chamber is deep the above method loses much of its utility because the track images are not plane . In this case it is convenient to decrease the angle between the axes of the ...
Сторінка 255
... track . Thus a sort of model of the track is made , but since it is inconvenient to apply scales directly to the pins , images of the pin - system are projected on a screen , where the actual measurements are made . Grosev , Dobrotin ...
... track . Thus a sort of model of the track is made , but since it is inconvenient to apply scales directly to the pins , images of the pin - system are projected on a screen , where the actual measurements are made . Grosev , Dobrotin ...
Сторінка 264
... track may differ from that of the track we photograph . As pointed out by Blackett a track formed before the expansion suffers a pure strain when the chamber expands . Our present work is done on post - expansion tracks , but in counter ...
... track may differ from that of the track we photograph . As pointed out by Blackett a track formed before the expansion suffers a pure strain when the chamber expands . Our present work is done on post - expansion tracks , but in counter ...
Зміст
Vascularity in the Brains of Tailed Amphibians II Necturus | 395 |
Studies on Destruction of Red Blood Cells THOMAS HALE | 411 |
Conjugation in Opisthonecta henneguyi a Free Swimming | 437 |
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