（2019版）新人教版选择性必修第二册Unit 1Reading and thinking 补充历史上对人类生活有重大影响的科学发明ppt课件.pptx

1、The Four “Great” Inventions of Ancient China Gunpowder The Compass Papermaking PrintingSericulture (Silk Production) Legend says that around 2700 BCE, the Empress Hsi Ling Shi had a silkworm cocoon fall into her hot tea. As she watched the stands of fiber unravel, she had a vision of how to harvest

2、and weave the threads into silk. Making SilkDecimal System An example of how the Chinese used the decimal system appears in a transcription from the 13th century BCE, in which 547 days is written Five hundred plus four decades plus seven of days.Spinning Jenny and Power Loom Before the Industrial Re

3、volution, clothes were made at home. Afterwards, clothes were made by machines in factories. Often these machines were run by children. Steamboat Robert Fulton designed a steam engine for a steamboat that could move against the current of a river or against the wind. The steamboat created more oppor

4、tunities for trade and transportation on rivers. Thomas Edison1847 1931 His first successful invention was to improve the stock ticker First great invention was the tin foil phonograph which recorded sound First demonstrated the electric light in 1879 Invented the kinetoscope or motion picture camer

5、a George Eastman1854 - 1932 He invented easy use cameras And dry, transparent film on rolls His inventions made it possible for Thomas Edisons motion picture cameraPhilo T. Farnsworth1906 - 1971 September 7, 1927 first components of the television were demonstrated He invented the first electron mic

6、roscope and the first infant incubator Electronic eyes he invented were used in moon landings1847- 1922 The microphone has a diaphragm where the sounds waves vibrate. The amplifier, a small part of the telephone then sends it through to the other lines speaker, reinterpreting the sounds into physical vibrations. The speaker picks up the sounds waves from the other line, and sends them through the network to your ear drums. The sounds vibrate in your ear, and you then have sound.The Wright BrothersOrville and Wilbur Wright developed the first glider in 1903Science Fiction .Science Fact