istoryworld
Events relating to inventions and discoveries
The eunuch Ts'ai Lun either invents paper or presents a report on the new substance to the Chinese emperor
Roman socks, surviving in dry Egyptian tombs, are the earliest known examples of knitting
A document makes the first known reference to windmills, in use in Persia
Skilled Chinese paper-makers are captured by the Arabs - beginning the slow westward transmission of the technology of paper
The earliest surviving reference to the principle of the compass occurs in a Chinese manuscript
Su Sung, a Buddhist monk, develops in China the principle of the escapement in his tower clock worked by a water wheel
The Chinese develop a feature of great significance in the history of seafaring - a sternpost rudder which is an integral part of the ship
The first mention of a lens occurs in a manuscript by Roger Bacon, to be soon followed by the invention of spectacles
A great clock is completed in Padua, regulated mechanically by foliot and escapement
A clock, designed only to strike the hours, is installed in Salisbury cathedral and is still working today
The keyboard of the organ is adapted in Germany to strings, thus providing the harpsichord - first mentioned in a manuscript of this year
The oldest surviving spring mechanism (enabling clocks to become small and portable) is put to work
The first watches, made in Nuremberg, are spherical clocks about three inches in diameter, worn usually on a ribbon round the neck
The tinderbox provides a new way of making fire - with just flint, steel and tinder
An English clergyman, William Lee, develops the world's first industrial machinery, to knit stockings
Zacharias Janssen, a spectacle maker in the Dutch town of Middelburg, creates the first microscope
A lucky accident reveals the principle of the telescope to a spectacle maker, Hans Lippershey. In the Dutch town of Middelburg
Galileo improves on the Dutch telescope (and doubles his salary by presenting one to his employer)
Evangelista Torricelli, observing variations in a column of mercury, discovers the principle of the barometer
A German burgomaster, Otto von Guericke, devises an air pump capable of creating a vacuum
Dutch physicist Christiaan Huygens constructs the first pendulum clock, on Christmas Day in the Hague
Christiaan Huygens, inventor of the pendulum clock, now develops the hairspring - of great future importance in watches
Denis Papin, a French scientist working in England, demonstrates a pressure cooker fitted with a safety valve
A maker of harpsichords in Florence, Bartolomeo Cristofori, develops the piano ('soft') and forte ('loud') feature which leads to the piano
