Who invented speed dating

03 May

A bronze Chinese crossbow trigger mechanism with a butt plate (the wooden components have since eroded and disappeared), inlaid with silver, from either the late Warring States period (403–256 BC) or the early Han Dynasty (202 BC – AD 220) This includes the Four Great Inventions: papermaking, the compass, gunpowder, and printing (both woodblock and movable type).

The list below contains these and other inventions in China attested by archaeology or history.

(and I must say I myself am inclined to vote this way) Then we must regard the great-granddaddy of the modern bicycle to be the German nobleman, ) had two wheels and a wooden frame with a rotating handlebar attached, which permitted the front wheel to be turned. Macmillian Kirkpatrick's pedal bicycle triggered a craze for bicycle riding. Lallement died in obscurity at the young age of 47 ... You can see now why I thought we should give the poor chap his dues. Honestly, ladies and gentlemen, it seems to be all hard graft and heartache.

Because - this mighty machine is a product of over 200 years of spectacular EVOLUTION. But first let me ask you this so I know where to start. However, ladies and gentlemen, if your answer be NO ... Eventually the bicycle importer (left) bought the patent and made squillians of dollars from it.

China was a great time The historical region now known as China experienced a history involving mechanics, hydraulics and mathematics applied to horology, metallurgy, astronomy, agriculture, engineering, music theory, craftsmanship, naval architecture and warfare.

By the Warring States period (403–221 BC), inhabitants of the Warring States had advanced metallurgic technology, including the blast furnace and cupola furnace, while the finery forge and puddling process were known by the Han Dynasty (202 BC–AD 220).

Unfortunately for the poor old working men and women, Michaux's velocipede was expensive. This article takes you through the answers and controversies on the invention of the radio. A number of researchers have contributed to this breakthrough in wireless technology in the late nineteenth century.In 1223, Japanese Zen master Dōgen Kigen recorded on Shōbōgenzō that he saw monks in China clean their teeth with brushes made of horsetail hairs attached to an oxbone handle. 18,653) in the United States, but mass production in the United States did not start until 1885.The bristle toothbrush spread to Europe, brought from China to Europe by travellers. While in prison he decided that using a rag with soot and salt on the teeth was ineffective and could be improved. The improved design had a bone handle with holes bored into it for the Siberian boar hair bristles.