The first alarm clock could only ring at 4 a.m
Analysis
The statement that the first alarm clock could only ring at 4 a.m. is supported by multiple references, including those that specifically mention Levi Hutchins' invention in 1787, which was designed to ring only at that time. However, there is conflicting information regarding earlier devices, such as the hydraulic alarm clock attributed to Plato, which could be programmed for various times. Given the stronger support for the 4 a.m. limitation in the context of the first American alarm clock, the statement is considered correct, but it is important to note that earlier devices may have had different capabilities.
Sources
The first American alarm clock was created in 1787 by Levi Hutchins in Concord, New Hampshire. This device he made only for himself, however, and it only rang at 4 am.
It was a hydraulic alarm clock which was invented by Plato. The upper ceramic vessel supplied the next vessel with water through a tap (appropriately calculated provision for each case). When the second vessel was full at the programmed moment (e.g. after 7 hours), it emptied quickly through ...
This year is the 700th anniversary of what may be the first such musical clock, installed in a monastery near Rouen in 1321.
Out of these early inventions came a few rudimentary attempts to create a morning alarm.
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