The Keeping of Time

Time is an unchanging force that changes the social structure until today. As Galileo said: "It is not that we measure measurable things and make them measurable" (Galileo 1-5) means measuring something including time. A specific function is required to succeed, but the most prominent of these is maintaining an accurate time measurement to create a systematic timeline for building prosperous business is. (Galileo) In the earliest way in the easiest way you can go back to BC.

"But that is not perfect - if you want to confirm that it is accurate to the second one, you need to adjust it once or twice a week.To use my city's main clock for setting.Weekly You need to take a telescope from the Naval Observatory in Washington, DC for 1 or 2 seconds to the Naval Observatory via the main clock of the country 1 or 2. The United States is not perfect and needs to be re-adjusted occasionally.

I can not live without a watch. This is a very important invention. For many years equipment has been used to keep track of time. However, the first watch was invented in the 2nd century BC. This is the sun's clock. The movement of the sun through the sky makes it possible to simply estimate the time from the length and position of the shadow projected from the vertical bar. If the place where the sun's shadow falls is marked, you can record the time in a consistent way. The result is the sun's clock. Then the water clock was invented. The water clock called Greek "leak pot" tries to measure the time according to the amount of water dripping from the tank. If the flow of water is fully controlled, this will be a reliable form of watch. But actually I can not. "Leak Pot" is in Egypt in 1400 BC through Greece and Rome, Arab civilization and China, and even in Europe has a history of glory in the 16th century. But it is more like a toy than watch

Today, the ability to keep track of time seems to be taken as usual. You can know the exact time by watching clock, watching phone. The time to invent such a battery-powered gadget is completely different. For example, in the ancient world, it is a commonly used diet. However, this time measurement method has drawbacks. Of course, sunlight only functions under the sun and can not maintain a certain time allocation. In order to compensate for these drawbacks, a water clock was invented. Although no one has decided the manufacturing time and manufacturing location of the first watch, the oldest dates dates back to 1500 BC and dates back from the grave of Pharaoh Amenhotep I of Egypt.