The conversation between human and AI assistant.
When the first clock was invented, How did they know what time it was?
I have a question about the history of clocks. When the first clock was invented, how did they know what time it was?
That's an interesting question. The first mechanical clocks were invented in Europe during the 14th century, and they were not very accurate. The time was usually set by observing the position of the sun in the sky.