In addition, because the sun does not sink in the sky, it is impossible for humans to determine the time by observing the changes in the sky.

Therefore, there is also a strange idea for the measurement of time!

That strange person, name: Su Song.

The idea he proposed was as follows:

Make two barrels, one on top and one on the bottom, then use a very thin hollow wooden pipe to open the two barrels and fill them with water.

At the same time, the surface of each barrel should also be carved with degrees, like a glass bottle for testing, and then look at the height of the water, when the water drops to a third of the level, then it is equivalent to a day, when ......

"Ten Thousand Tribulations" Chapter 266: He's worth it! I am hitting it in my hand, please wait a moment,

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