A supplement to geometrical dialling, / by William Leybourn, philomath. Shewing how by scale and compasses to inscribe such circles of the sphere into sun-dial-plains, that shall shew (besides the hour of the day) the diurnal motion of the Sun; his place in the zodiack; the time from his rising, and setting; the Babylonian, Italian, and Jewish hours; the point of the compass upon which the Sun is at any time of the day, and the proportions of shadows to their heights. Also a general and easie way to project hour-lines upon all kinds of superficies, without any regard had to their standing, either in respect of declination, reclination, or inclination. And how from a glass horizontally placed in the soyl of a window, to reflect hours upon any superficies, either flat, or curved; one, or many.
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| Format: | eBook |
| Language: | English |
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London :
printed for Thomas Sawbridge, at the Three Flower-de-luces in Little-Britain,
1689.
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| Series: | Early English books online.
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| Online Access: | Connect to the full text of this electronic book |
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