A crude form of math was first invented by the Sumerians in the sixth century BC. Because the Sumerians had developed a settled, agricultural civilization, they needed math as a way to measure plots of land, tax individuals, chart the sky and develop a lunar calendar.Know More
The Sumerians were the first people to use abstract symbols to describe large groups of objects. At first, they used symbols to represent sheaves of wheat. Eventually, they developed cuneiform writing and probably were using a crude abacus by the second century BC.
The Sumerians used the base 60 numeric system. They counted by using the 12 bones of the four fingers on one hand.Learn More
There is much debate about who invented the DVD player and even when it was first invented, since the technology is derived from multiple sources, including several individuals and companies. When the acronym was first created, DVD stood for digital versatile disc, although now it stands for digital video disc.Full Answer >
The train was first invented and patented in 1784, by James Watt. The first working model to be made and successfully run was created in 1804 by Richard Trevithick.Full Answer >
It is believed that the Sumerians invented the arch somewhere around 6000 B.C. The Romans, however, receive much of the credit for perfecting the design.Full Answer >
The first abacus is thought to have been invented by the Sumerians between 2700 and 2300 BC. However, earlier cultures may have developed the abacus first.Full Answer >