TIL : The First alarm clock could only Ring at 4am
Today I learned a pretty interesting fact about alarm clocks and their invention. The early prototype of an alarm clock was invented by the Greeks in 250BC. Their primary ideas was based on using water and its action with a mechanical bell. They built an alarm clock in which rising water would keep time and eventually hit a mechanical bird triggering a whistle. The first alarm clock was invented by Levi Hutchins, New Hampshire, United States in 1787 but the problem with this clock was that it could only ring at 4am. He made this clock only for himself in order to wake him up for the job.
Later in 1876, Seth E Thomas designed a mechanical wind-up alarm clock that could ring at your desired time and was soon patented.