6。Mathematics. The Sumerians were the first who invented the method of calculator, both positive and negative, the multiplication of sume study widely used main 60 and main it is used in the count of time to the present. As well as divided into 360 circle.(6 x 60)
.7. To create a system of weights and measures, and calendars. The Sumerians were known to use the system weighing and measuring. The article measure of Sumer is divided into a shekel (shekel). (Mina) and talents (talent) by using the principle of 60 is 60 Shekel is 1 there,60 Mina is 1 talents for the calendar. The Sumerians invented the calendar for the first time. However, based on monitoring the trajectory of the moon. The calendar is a lunar calendar of Sumer, a year has 12.One month has 29 1 / 2 days, years of Sumer is only 354 days. Heading towards error with year by solar model, which is 365 1 / 4 days and months of the Sumerians were divided into 4 week. A week 7 - 8 days. One day is divided into 6 lunch hour.6 hours (1 equivalent hours 2 hours nowadays)
.8。The architecture. Sumer is known as a pioneer to use bricks in the construction widely. The brick making up from clay. Many วึ่งมี by substitution หินวึ gallery is a rare brick of Sumer is 2 types.And the type of heat or fire the first type won't tolerate moisture. Used in construction building parts that do not affect the wetness. Brick type heat or burn will endure moisture well. Use cause the lower part of the building, such as a raised foundations and walls, etc.The Sumerians built their city-state. Brick up surrounded by a wall area is the most important part of the state, including the temple or sacred. Dwelling of God.The pyramids of Egypt, called ziggurats (Ziggurat) or "tower block" build a tower high, large, reduce the shed is 3 level. The top is the highest god in the city-state, below next to the "tower block" down เป็นที่ตั้งของ temples.According to the fancy of the royal tomb. The Sumerians. Sumerians worshipped many gods. Each city and arrange is God. The royal patron state, especially the presence at the big temple, called ziggurats.
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