萬物運行的奧秘要點

1、Brownian motionMichelson interferometer Postulations （假設）（假設） of EinsteinvLaws of physics are the same in every inertial frame (慣性坐標系) Perform experiment on train going east gives same results as on train going west.vSpeed of light is c in every inertial frame Measure c=3x108 m/s if you are on train

2、 going east or on train going west, even if light source isnt on the train.Time Dilation （膨脹）（膨脹）At RestMovingvThe light of flash reaches all the sides at the same time?vTwins decide that one will travel to Alpha Centauri and back, while the other stays on earth. Compare their ages when they meet on

3、 earth.Relativistic MomentumvChange in momentum goes to infinite with particles speed approaching to cvC is the limiting speed of particleMass and EnergyvWhat the Mass-Energy relation tells us? Transformation between Mass and Energy!222021/cvcmmcEn靜系中靜系中 子的平均壽命為子的平均壽命為 =2.2 10-6秒。據(jù)報秒。據(jù)報導，在一組高能物理實驗中，

4、當它的速度為導，在一組高能物理實驗中，當它的速度為v=0.9966c時通過的平均距離為時通過的平均距離為8km。按經(jīng)典力學按經(jīng)典力學)m(660102 . 210368vL按相對論力學按相對論力學mtvLcvt38626221089 .26103) s (109 .269966. 01102 . 21生命在于運動！生命在于運動！一個電子被電壓為一個電子被電壓為106V的電場加速后，其質(zhì)量為多少？的電場加速后，其質(zhì)量為多少？速率為多大？速率為多大？按經(jīng)典力學按經(jīng)典力學! ! !/1093. 52101 . 92) J (106 . 110106 .smvsovvmEeU

5、EekkcsmcvvcvmmkgmcEmcmmcEeUEkkk94. 0)/(1082. 2)(11)(1069. 2101 . 9)103(106 . 1) J (106 . 110106 . 182220303128130220213619按相對論力學按相對論力學Black Hole (黑洞)= C t=11.4km/dayV=1.4107m/hr, -7S/day (Special Relativity)H=2 107m ，about 0.25Fground, +45 S/day, (General Relativity ) Total t=+38 S/dayC= 3105km/SQuestion: The distance between China and U