Show Early Use of Sundials Sundials are used as ornaments in suburban and country gardens but in the days of the early Egyptians sundials were used as means means' of ot telling time Ume The Greeks' Greeks knowledge knowledge knowledge knowl knowl- edge of geometry led them to invent elaborate dials and Ptolemy treat treat- treated treated ed of the construction of such ments After the fall of the classic civilization sundials continued to be made by the Arabs Much experimentation done dona in hi was the Seven n. n century but in the Eighteenth Eighteenth Eight Eight- century clocks and watches began belan to replace this device |