阅读理解
In 1905, as part of his special theory of
relativity, Albert Einstein published the point that a large amount of energy
could be released from a small amount of matter. This was expressed by equation
E=mc2 (energy equals mass times the speed of light squared). But
bombs were not what Einstein had in mind when he published this equation.
In 1929, he publicly declared that if a war
broke out he would "refuse to do war service, direct or indirect…"
His position would change in 1933, as the result of Adolf Hitler's coming into
power in Germany.
Einstein's greatest role in the invention of
the atom bomb was signing a letter to President Franklin Roosevelt urging that
the bomb be built because some physicists feared that Germany might be working
on an atom bomb. Among those concerned were physicists Leo Szilard and Eugene
Wigner. But Szilard and Wigner had no influence on those in power. So in July
1939 they explained the problem to someone who did: Albert Einstein. After
talking with Einstein, in August 1939 Szilard wrote a letter to President
Roosevelt with Einstein's signature on it, which was delivered to Roosevelt in
October 1939.
In 1905, as part of his special theory of
relativity, Albert Einstein published the point that a large amount of energy
could be released from a small amount of matter. This was expressed by equation
E=mc2 (energy equals mass times the speed of light squared). But
bombs were not what Einstein had in mind when he published this equation.
In 1929, he publicly declared that if a war
broke out he would "refuse to do war service, direct or indirect…"
His position would change in 1933, as the result of Adolf Hitler's coming into
power in Germany.
Einstein's greatest role in the invention of
the atom bomb was signing a letter to President Franklin Roosevelt urging that
the bomb be built because some physicists feared that Germany might be working
on an atom bomb. Among those concerned were physicists Leo Szilard and Eugene
Wigner. But Szilard and Wigner had no influence on those in power. So in July
1939 they explained the problem to someone who did: Albert Einstein. After
talking with Einstein, in August 1939 Szilard wrote a letter to President
Roosevelt with Einstein's signature on it, which was delivered to Roosevelt in
October 1939.
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