Download e-book for iPad: 1,000 Inventions and Discoveries by DK


ISBN-10: 146542038X

ISBN-13: 9781465420381

From making hearth to construction the contraptions of the twenty first century, discover the tales in the back of the notable principles and units that experience formed our global in 1,000 innovations and Discoveries.

This revised and up to date version brings this accomplished assessment of humanity's maximum principles modern. concepts in technological know-how, house, expertise, transportation, drugs, arithmetic, and language are coated, in addition to a timeline of background highlighting all innovations and discoveries from the airbag to DNA, lie detectors to hormones, and funds to the indicators of the zodiac. function containers delve into the main points of the lives of Isaac Newton, Marie Curie, Albert Einstein and extra, whereas impressive photographs and archive fabrics convey their achievements to life.

Covering over three million years of principles, 1,000 innovations and Discoveries will amaze and encourage a love of heritage in kids.

Supports the typical middle kingdom Standards.

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Additional info for 1,000 Inventions and Discoveries

Sample text

The introduction of horses and a lighter construction, including spoked wheels (✷ see page 31), made the chariot into a formidable fighting platform for one or two soldiers. It had only two wheels, allowing it to take sharp turns, but could be pulled by as many as four horses. These lightweight chariots helped win many battles. c 2300 bc The Sumerian empire, weakened by internal strife, is taken over by an invader, Sargon I. He founds a new city, Agade. It becomes the wealthiest in the world, and the Sumerians become the Akkadians.

Learn to cope with deep snow. Skis started out as something more like snow shoes: short, wide, wooden frames covered in leather. In time, they became the longer, more rigid devices we know today. The oldest known skis, found in the bogs of Finland and Sweden, date from about 2500 bc, and a Norwegian rock carving from about the same date clearly shows people using skis. Welding c2500 bc W elding is the process of joining metal parts together using pressure or heat, and sometimes using a filler nothing of pottery, but weave baskets for containers.

Some even had toilets, of a sort, with seats to sit on. Further west, in about 1700 bc, the wealthier Minoans of ancient Crete had more lavish bathrooms to which they could sneak off for a quiet soak. C locks that chime use an idea that started in China before 2000 bc. Bells or blocks of stone tuned to musical notes were hung from a frame. They were hit with hammers to add music to religious ceremonies or simply to play tunes. The idea spread to Japan, India, and the West, where monks were playing rows of bells by about ad 850.

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1,000 Inventions and Discoveries by DK

by George

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