John Harrison was a carpenter by trade who was self-taught in clock making. He was only 21 years old when the Longitude Act was passed. And he spent the next 45 years perfecting the design of his timekeepers.
In 1727, he made the Harrison Clock, an amazing fully working wooden mechanism. His clock achieved an accuracy of one second in a month, far better than any clocks of the time.
In order to solve the problem of Longitude, he aimed to devise a portable clock which kept time to within three seconds a day.
Three of his early wooden clocks have survived to this day. They are at display in the Worshipful Company of Clockmakers’ collection in the Science Museum in London.
A sword is an edged, bladed weapon, used for manual cutting or thrusting. Its blade is longer than a knife or dagger and is attached to a hilt. Swords can be straight or curved.The...
She’s probably the most controversial woman in Chinese history – Wu Zetian, who rose from lowly concubine to become the only woman in all Chinese history to dare to take the ti...
The War of the Roses is one of the bloodiest civil wars in history. Fought over control of the English throne in the mid-to-late fifteenth century, the battle was a civil war betwe...
The London Bridge is the symbol of London. Recognizable to visitors from all over the world, the London Bridge has existed in one form or another for nearly 2,000 years by now. It ...