TAILIEUCHUNG - INVENTIONS & DISCOVERIES

When the American colonies declared their independence in 1776, it took 48 days for the news to cross the Atlantic. The arrival of the telegraph in 1843 and the telephone in 1876 meant that news could get to anywhere in the world almost instantly. The beginning of radio communication in 1896 meant tha sounds could travel vast distances without the need for cables. When television arrived in 1936, moving pictures and sounds had the capability to be seen by millions at the same time anywhere in the world | INFOI INVENTIONS DISCOVERIES School Specialty n Publishing Columbus Ohio This edition published in the United States in 2006 by School Specialty Publishing a member of the School Specialty Family. Copyright ticktock Entertainment Ltd 2005 First published in Great Britain in 2005 by ticktock Media Ltd. Printed in China. All rights reserved. No part of this book may be reproduced stored in a central retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise withouth the prior written permission of the publisher. Written by Dee Phillips Brian Alchorn Catherine Chambers David Dalton Dougal Dixon Ian Graham Colin Hynson Clint Twist and Richard Walker. We would like to thank Wendy and David Clemson Evelyn Alchorn Steve Owen and Elizabeth Wiggans. Library of Congress-in-Publication Data is on file with the publisher. Send all inquiries to School Specialty Publishing 8720 Orion Place Columbus OH 43240-2111 ISBN 0-7696- 4256-X 123456789 10 TTM 11 10 09 08 07 06 2 CONTENTS HOW TO USE THIS BOOK__4 TIMELINE - AN AMAZING STORY_6 Timeline 250 000 BC STONE TOOLS to 1770 STRUCTURE OE WATER The first clocks The atomic clock TIMELINE Timeline 1794 THE COTTON GIN to 1943 COLOSSUS Invention of printing Invention of photography TIMELINE Timeline 1946 CARBON DATING Io 2004 A NEW PLANET Nuclear power Mathematics EARLY INVENTORS_12 Timeline of early inventions Early farming Metals Invention of writing Invention of painting Invention of pottery Papyrus paper NATURAL WORLD .__14 Timeline of discoveries Dinosaur discoveries Charles Darwin Homo Erectus Continental drift The story of DNA SCIENCE ALL AROUND_16 Elements discovery timeline Periodic table The first microscope

• Điện - Điện tử
• Dinosaur discoveries
• new carbon
• Electricity timeline
• genetic engineering
• Solar System
• space telescope
• project management
• Embedding effective
• systemised approach