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Trachyneis clepsydra Cleve 1894
2018Trachyneis clepsydra (Donkin) Cleve (1894: 192) (Fig. 58) References: Donkin 1861, p. 8, pl. 1, fig. 3 (as Navicula clepsydra Donkin (1861: 8)); Witkowski et al. 2000, p. 355, pl. 159, fig. 11. Features: Length 110–130 μm, width 20–25 μm, transapical striae 12 in 10 μm. Description: Valves linear lanceolate with rounded apices.
Al-Handal, Adil Y. +2 more
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2016
This book discusses how relation to time in general, and to the Jewish one in particular, has been envisioned by theologians and philosophers for their own purposes. Arguing that “time,” as a notion and perception, is a social construct made out of beliefs, scientific knowledge, and political experiment, and not a uniform phenomenon, the book shows ...
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This book discusses how relation to time in general, and to the Jewish one in particular, has been envisioned by theologians and philosophers for their own purposes. Arguing that “time,” as a notion and perception, is a social construct made out of beliefs, scientific knowledge, and political experiment, and not a uniform phenomenon, the book shows ...
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Leucochrysa (Nodita) clepsydra Banks
2008Leucochrysa (Nodita) clepsydra Banks (Figs. 1–5; additional images: http://morphobank.geongrid.org/permalink/?F15) Leucochrysa clepsydra Banks 1918: 14 [description]. Nodita clepsydra. Banks 1944: 20 [species listing, combination]; Penny 1977: 25 [species listing]. Leucochrysa (Nodita) clepsydra.
Tauber, Catherine A. +2 more
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Ocaria clepsydra (H. H. Druce) (Figures 1, 8–9, 17, 21, 28, 34) Diagnosis. Ocaria clepsydra is characterized by: (1) significant amount of submarginal white suffusion on the ventral surface of both wings; (2) white scales forming a contiguous band on the VFW; (3) VHW white band displaced basally in the apex where it reaches the postmedian line; and (4)
Faynel, Christophe +4 more
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Faynel, Christophe +4 more
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The Journal of Hellenic Studies, 1957
Empedogles' simile of the clepsydra (DK6 31B100) is a crucial document for historians of ancient science. It has been much discussed, and often quoted in evidence, in spite of formidable differences of opinion about its significance. ‘Empedocles undertook an experimental investigation of the air we breathe’ (B. Farrington).
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Empedogles' simile of the clepsydra (DK6 31B100) is a crucial document for historians of ancient science. It has been much discussed, and often quoted in evidence, in spite of formidable differences of opinion about its significance. ‘Empedocles undertook an experimental investigation of the air we breathe’ (B. Farrington).
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The Compartmented Cylindrical Clepsydra
Technology and Culture, 1962A clepsydra or "water clock" is described as a contrivance for measuring time by the graduated flow of water or other liquid through a small aperture. Many types of clepsydrae have been devised and have figured in horological history from the early ingenious examples of the Egyptians,' the Chinese,2 and those created in the Hellenistic period by ...
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Clepsydrae, from Galilei to Torricelli
Physics of Fluids, 2000The whole article deals with free fall: the free fall of a solid particle carefully studied by Galileo Galilei and the free fall of a fluid particle along a stream line introduced by Evangelista Torricelli. Both limits are brought together in the problem of the vertical emptying of a cylindrical tube of diameter D0 through a hole of diameter d, and one
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The clepsydra experiment, clepsydra’s functioning and the related devices in Heron’s Pneumatics
Almagest, 2011In the introduction to Heron’s Pneumatics a number of theoretical subjects are discussed which form the theoretical background of the functioning of the devices. One of these subjects is the demonstration of the corporeity of air, which is closely related to the clepsydra.
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