By DK

From making hearth to development the devices of the twenty first century, discover the tales at the back of the outstanding principles and units that experience formed our international in 1,000 innovations and Discoveries.

This revised and up to date version brings this complete assessment of humanity's maximum rules brand new. concepts in technological know-how, house, expertise, transportation, medication, arithmetic, and language are coated, besides a timeline of background highlighting all innovations and discoveries from the airbag to DNA, lie detectors to hormones, and cash to the indicators of the zodiac. characteristic packing containers delve into the main points of the lives of Isaac Newton, Marie Curie, Albert Einstein and extra, whereas awesome photos 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 background in kids.

Supports the typical middle kingdom Standards.

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Extra resources for 1,000 Inventions and Discoveries

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Eratosthenes realized that the difference was caused by the curvature of Earth. Using the idea that there were 360 degrees in a circle, and knowing the distance between Aswan and Alexandria, he was able to calculate Earth’s circumference as the distance between Aswan and Alexandria × 360 ÷ 7. Eratosthenes’ calculation came up with the answer of about 25,700 miles (41,143 km). The true value is about 25,000 miles (40,000 km), so he wasn’t too far off. 499 bc – 1400 different theories today, his ideas did make sense.

On dissection 282 bc After 12 years’ work, Greek sculptor Chares of Lyndus completes a 105 ft (32 m)-high bronze statue of the Sun god Helios, on the island of Rhodes. An earthquake destroys it within 60 years and it is sold for scrap. 47 The age of auThoriTy Doing science in the bath Archimedes solves a weighty problem and discovers how things float W Golden leaves used to adorn a religious statue Gold for Gods and kinGs Ancient craft workers fashioned gold into decorations that were not only beautiful but also indicated the importance of the wearer.

Scientific botany c300 bc Greek philosopher Theophrastus was the first real botanist. Between about 320 and 280 bc, he wrote more than 200 books on the subject. Only two, which deal with the origin and growth of plants, have survived. Modern botanists no longer use his work, but without him they might never have gotten started. Theophrastus fter thousands of years spent using and cultivating plants, people began to wonder where the plants came from and how they worked. The scientific study of plants is called botany, and the ancient c 300 bc Geographer Pytheas becomes the first Greek to describe northern Europe after 46 C tesibius of Alexandria discovered that air can be compressed and will then exert a force.

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