From making fireplace to construction the devices of the twenty first century, discover the tales in the back of the amazing rules and units that experience formed our global in 1,000 innovations and Discoveries.
This revised and up to date version brings this finished overview of humanity's maximum rules brand new. options in technology, house, expertise, transportation, drugs, arithmetic, and language are coated, in addition to a timeline of historical past highlighting all innovations and discoveries from the airbag to DNA, lie detectors to hormones, and cash to the indicators of the zodiac. characteristic bins delve into the main points of the lives of Isaac Newton, Marie Curie, Albert Einstein and extra, whereas outstanding photographs and archive fabrics convey their achievements to life.
Covering over three million years of rules, 1,000 innovations and Discoveries will amaze and encourage a love of historical past in kids.
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Additional info for 1,000 Inventions and Discoveries
Central heating c450 bc Aeschylus T he word “scenery” comes from the dressing room, or “skene”, once used by actors in ancient Greece. It was in a building at the back of the stage and, by the time of the playwright Aeschylus, it was also being used to support 490bc The first ever marathon is run in Greece when a soldier staggers 26 miles (42 km) from Marathon M central heating The Greeks may have circulated hot air around these pillars in the ruined city of Phaselis to heat the room above. to Athens to bring news of a victory over the Persians.
Objects placed in water move downward until their weight is balanced by the weight of the water they displace, then stay at that level. If their average density is more than that of water, they cannot float. They sink. Later, Hieron had more serious problems. When Archimedes was an old man, the Romans besieged Syracuse. Once again, he was called upon. He used his scientific knowledge to design ships, catapults, and even, it is said, giant mirrors to burn Roman ships with the Sun’s rays. In 211 bc, the city was eventually captured.
Some of Pythagoras’ followers speculated on a mystical “music of the spheres” created by movements of mathematically spaced planets. But this beautiful theory was based on speculation, not facts. We have moved on since Pythagoras’ time. We have learned that mathematics is a powerful tool to describe The debaTer This detail from a frieze at the University of Athens probably shows an accurate view of how the Pythagoreans tested their theories, basing them on belief and argument, not experiment. Their mathematics was limited to what we now call geometry The tetraktys was a triangle figure made of ten dots.