物理知識在實(shí)際中的應(yīng)用(英語ppt)(免費(fèi)).ppt

1、Physical knowledge in practical application,Your Subtitle Goes Here,Aspects of the Knowledge about Physical and Life,extensive application of mechanical knowledge application of Thermal knowledge application of the light and sound phenomenon application of electrical knowledge,extensive application

2、of mechanical knowledge,We cant live without Gravity. If there is no gravity, the world would be inconceivable, water can not be poured into his mouth, it can not fall back to the ground after takeoff, flying dust will always float in the air, the whole natural world would be a chaos. the actual pro

3、duction and living of mankind are concerned with friction. the friction to make full use of beneficial ,and harmful to minimize friction.,application of Thermal knowledge,Specific heat capacity (比熱容）of water is large Automotive engine use cooling water Protection of seedlings not damaged by frost du

4、ring the night is pouring water. use of solid expansion and contraction(熱脹冷縮） It can be used for a variety of mechanical bearings, train tire manufacturing(機(jī)械軸承的制造）,application of the light and sound phenomenon,Human existence requires light. we use the sun during the day ,and night need to light, n

5、o light envisaged the universe, the whole world will be plunged into darkness, all living organisms will not survive. application of sound knowledge. 10m length about the classroom is to avoid the soundtrack, two voices echo.,application of electrical knowledge,From power consumption to transportati

6、on, factories and enterprises in electricity, are derived from the generator, electricity has become a essential source of energy. The power of human good partners, as long as we strictly follow the principle of safe use of electricity, we can tame it, use it to serve mankind.,Interesting physical p

7、henomena around,Phenomenon1:when wall quartz clock stopped walking, its second hand on the dial often stopped at the 9 position. Phenomenon2:Sometimes the tap water pipe bursts of noise when its nearby faucet Drainage. Phenomenon3:Frozen pork in water than in air with temperatures thaw faster.,Expla

8、nation of above phenomenon,wall quartz clock stopped at the 9 position because the second hand in the 9 position is the largest re-torque. Sometimes the tap water pipe bursts of noise when its nearby faucet Drainage, because of the Resonance(共振）between them. Frozen pork in water than in air with temperatures thaw faster. This phenomena indicate that: the heat transfer of water is better than air.,Questions to think of for fun,Sooner or later why t