Sounding the Ocean of Air Being Six Lectures Delivered Before the Lowell Instit
Sounding the Ocean of Air Being Six Lectures Delivered Before the Lowell Instit
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In our eReader you can find the full English version of the book. Read Sounding the Ocean of Air Being Six Lectures Delivered Before the Lowell Instit Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Sounding the Ocean of Air Being Six Lectures Delivered Before the Lowell Instit
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velocity measured at one station, if the height of the cloud be known. Fig. 2 shows the theodolite on the tower of the Observatory. Five other methods of measuring clouds have been employed at Blue Hill : (i) The only method of finding the height of lofty and uniform cloud strata is by CLOUDS 55 means of the light thrown on them from below, and on Blue Hill the electrical illumination of the surrounding towns is utilized. The angle which the centre of the illumination makes with the horizon is ...measured, and knowing the distance of the town, the right-angled triangle may be solved.
(2) An accurate method for low and uniform clouds is to send kites into them, as will be explained in the closing chapter. (3) When the clouds are low enough to cast shadows on the ground, the angles of the cloud and sun as seen from the Observatory are measured, and with the distance of the shadow from the hill-top, ascertained by a map, this triangle can be solved. The times of passage of the shadow over known points on the landscape afford another means of calculating its velocity.
What to read after Sounding the Ocean of Air Being Six Lectures Delivered Before the Lowell Instit?
You can find similar books in the "Read Also" column, or choose other free books by Rotch, Abbott Lawrence, 1861-1912 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
velocity measured at one station, if the height of the cloud be known. Fig. 2 shows the theodolite on the tower of the Observatory. Five other methods of measuring clouds have been employed at Blue Hill : (i) The only method of finding the height of lofty and uniform cloud strata is by CLOUDS 55 means of the light thrown on them from below, and on Blue Hill the electrical illumination of the surrounding towns is utilized. The angle which the centre of the illumination makes with the horizon is ...measured, and knowing the distance of the town, the right-angled triangle may be solved.
(2) An accurate method for low and uniform clouds is to send kites into them, as will be explained in the closing chapter. (3) When the clouds are low enough to cast shadows on the ground, the angles of the cloud and sun as seen from the Observatory are measured, and with the distance of the shadow from the hill-top, ascertained by a map, this triangle can be solved. The times of passage of the shadow over known points on the landscape afford another means of calculating its velocity.
What to read after Sounding the Ocean of Air Being Six Lectures Delivered Before the Lowell Instit?
You can find similar books in the "Read Also" column, or choose other free books by Rotch, Abbott Lawrence, 1861-1912 to read onlineMoreLess
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