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1044
Compass
The first definitive mention of a magnetic compass dates from a Chinese book finished in 1044. It describes how soldiers found their way by using a fish-shaped piece of magnetized iron floating in a bowl of water when the sky was too cloudy to see the stars. -
1455
Printing
Johannes Gutenberg completed the printing of the Bible, which was the first book printed in the West using movable type. Gutenberg’s printing press led to an information explosion in Europe. -
Railways
English engineer Richard Trevithick improved James Watt’s steam engine and used it for transport. He built the first railway locomotive at an ironworks in Wales. -
Photography
In the early 1820s, Nicéphore Niépce became interested in using a light-sensitive solution to make copies of lithographs onto glass, zinc, and finally a pewter plate. He then had the great idea to use his solution to make a copy of an image in a camera obscura (a room or box with a small hole in one end through which an image of the outside is projected). In 1826 or 1827, he made an eight-hour-long exposure of the courtyard of his house, the first known photograph. -
Telephone
Once it was possible to send information through a wire in the form of dots and dashes, the next step was actual voice communication. Alexander Graham Bell made the first telephone call, on March 10, 1876, when he asked his assistant Tom Watson to come to him: “Mr Watson—come here—I want to see you.”