tailieunhanh - Ebook Technology (Volume 9)

To help you have more references in the process of teaching and learning English for children, invite you to refer to the contents of the book "Technology volume 9". Contents of the document referred to you the words, images and structure of the aircraft. Hope this is useful references for you. | Rourke s World of Science Volume 9 Technology By Nancy Harris Editorial Consultant Luana Mitten Project Editor Kurt Sturm Rourke Publishing LLC Vero Beach Florida 32964 Table of Contents What Is Technology .4 Farm Ships and Boats .12 Trains .16 Motor Currents .25 Microscopes .31 Surgery .34 Telephones .37 Copiers and Fax Cameras .50 Motion Picture Camera .52 Central Processing Dedicated Computers in Our Everyday Personal Computers .54 Drives .54 Monitor Keyboard and Mouse .55 Printers .56 Network .56 The People Who Use 4 Technology What Is Technology Science is the search for knowledge. Scientists look at the world. They observe how things work and develop ideas about ways to make them work better. Sometimes they try to test an idea to explain how something works. Scientists perform experiments to find out how things work. The knowledge that they discover is useful for many things. It can help to build new machines. It can help scientists to develop new medicines or cure a disease. Technology is the use of scientific knowledge to create new things. Scientists must often wear protective clothing. Inventors An inventor is a person who creates a new idea or device to perform a task. An invention is the new technology created. An inventor with a new idea or design for an invention may decide to have the idea protected. The idea gets protection from the law in a paper called a patent. A patent prevents other people from making using or selling the new idea without permission from the inventor. Some inventions are simply a better way of doing or building something. They may improve an existing technology. Other inventions are