EditorialLeverage laws and burning mirrors, Figs. 131-135: Lever laws according to Archimedes et al., Figs. 136-138: Firing mirror, Fig. 139: Reflection rays, Figs. 131-139, according to p. 107, Christian Schessler: Demonstrationes mathematicae oder Untersuchun...
EditorialOarsmen and an Official, Old Kingdom, Dynasty 4?5, ca. 2465?2458 B.C., From Egypt, Memphite Region, Lisht North, Pyramid Temple of Amenemhat I, 1920?22, Limestone, paint traces, h. 60 cm (23 5/8 in); w. 30 cm (11 13/16 in), In the upper register, rower...