While devices to measure time have existed for thousands of years, the first mechanical clock was created in 725 by Yi Xing and Liang Lingzan in China. This was the first clock to use an escapement mechanism rather than ... More »

It is believed that the first mechanical clock was invented in 723 or 725 A.D. by Chinese mathematician and monk Yi Xing, also spelled I Hsing. Rudimentary clocks existed prior to that in Europe, but they did not have th... More »

Clocks were invented roughly 5000 years ago, around 3000 BC. Clocks from this era are called sundials and have undergone many transformations throughout the years to become modern day time-keeping machines. More »

It is believed that the first mechanical clock was invented in 723 or 725 A.D. by Chinese mathematician and monk Yi Xing, also spelled I Hsing. Rudimentary clocks existed prior to that in Europe, but they did not have th... More »

The first mechanical clock invented was in China during the 8th century A.D. The first mechanical clocks in Europe began to appear in the early 14th century. More »

www.reference.com History Inventions

The invention of gesture as a means of communication is as old as humanity itself, predating speech by thousands, if not millions of years. Modern sign language, however, is generally attributed to the work of the 17th-c... More »

www.reference.com History Inventions

The history of clocks includes timekeeping and sundials established thousands of years ago by ancient civilizations, water clocks in the second century B.C. and the tower clock in the 11th century A.D. Europeans built th... More »