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[文化博览] 【整理】2012-03-19 阿尔伯特·爱因斯坦 Einstein—3

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[Homework]2012-03-19 阿尔伯特·爱因斯坦 Einstein—3

HW

People didn't believe atoms in those days but atoms makes small dust particles move and he calculated the size of the atom
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These papers would have been remakable for any physicist but Einstain is far from finished.

He yet write another series of paper with the famous equation E =MC2 .

At the simplest  level this means energy can become matter and matter can become energy. The tinist  pack of matter holds potencially huge amounts energy . Unlishing it requires a necluear reaction  The thought going on constantly in the night sky.

Ever since people began to look up the heaven, they would say what makes the star shine.But it took Albert Einstain to anwser the question. Mass M turns into E energy , that is the engine that lights up the stars.

Today E=MC2 is Einstain's most famous equation but another thoery he published the same year is more important and more controversial , the special theory of relativity.

When Einstain was a teenager he enjoyed imagining what it would be like to ride a beam of light . Now he returns to this daydream and changes his life.

In the spring of 1905 Einstain was writing on a bus and he looked back at the famous clock tower that dominates Bern Switzerland .

And he imagine what  happens if that bus racing at the speed of light.

In his imagination Einstain looks back at the clock tower  and what he sees is astonishing .As he reaches the speed of light the ends of the clock appear frozen in time .

Einstain later writes the storm broken in my mind. All of sudden all of sudden everything everything can gush in forward.

Einstain kowns that back to the clock tower time is passing normally . But on Einstain's light speed bus as he reaches the speed of light , the light from the clock can no longe catch up to him . The faster he races through the space the slower he moves through time. This special insights sparks the birth of Einstain special theory of relativity which says that space and time are deeply connected. In fact they are one in the same , a flexible fabric called space time.



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