Smart Store - The first alarm clock could only ring at one time. Interesting fact about alarm clocks and their invention. The early prototype of an alarm clock was invented by the
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hindu_gurukul_ - Ancient alarm clock used by the Egyptians was made by a greek engineer, physicist and mathematician Ctesibius (285–222 BCE) who lived in Alexandria, Ptolemaic Egypt. But, Plato (428–348 BCE), a
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How Did People Wake Up Before the Invention of the Alarm Clock?
