大学英语课堂ppt展示-是否可以穿越时空

1、 Today,Let us talk a popularToday,Let us talk a popular topic about :topic about : This is a This is a controversial controversial topic!topic! Yes Belive unconvinced Binglsee No existent What is your view? Is it possilbe travelling through time? What is dimension? What are possible expre ssion of f

2、our-dimensional? Ask some questions! One dimension: A line! Tow dimensions:A plane! Three dimensions:Three - dimensional！ Parallel universers Theory of relativity The blake Hole theory Agreement! Existing! Yes! EinsteinEinstein The parallar universes! future now before firist second third The time m

3、achineThe time machine But why the But why the universes huniverses h ave different ave different speed?speed? The theory of black holes!The theory of black holes! lighttimespace The black The black holehole And now you are! The relativity of The relativity of the black hole is the black hole is so

4、powerful that so powerful that everyting is sucked everyting is sucked into it!into it! The grandmother paradox! Time inconsistency Invisibility Different vioces! No!No! Time inconsistency nownow futurefuture beforebefore There was no time machine before,it means you could not go back “now”! Oh,nOh,

5、n o o The grandmother paradox! before now If you went back in time,you could have prevented your grandmother meeting your grandfather,so that your mother would not have been born,and so nor would you. This is still a mystery now,however,we This is still a mystery now,however,we can believe that the mystery will be can believe that the mystery will be entirely cleared in the future with the entirely cleared in the future with the development of science and technology!development of science and technology! Of course,the finder Of course,