文章列表

• 1.万物简史 第213期:把铅撵出去(2)
• Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with ...
• 2.万物简史 第212期:把铅撵出去(1)
• 10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first nam...
• 3.万物简史 第211期:威力巨大的原子(25)
• Einstein disliked that, too. He devoted the rest of his life to searching for a way to tie up these loose ends by finding a grand unified theory, and ...
• 4.万物简史 第210期:威力巨大的原子(24)
• To explain what kept atoms together, other forces were needed, and in the 1930s two were discovered: the strong nuclear force and weak nuclear force. ...
• 5.万物简史 第209期:威力巨大的原子(23)
• Quantum theory is very worthy of regard, he observed politely, but he really didnt like it. God doesnt play dice, he said. Or at least that is how it ...
• 6.万物简史 第208期:威力巨大的原子(22)
• Remarkably, the phenomenon was proved in 1997 when physicists at the University of Geneva sent photons seven miles in opposite directions and demonstr...
• 7.万物简史 第207期:威力巨大的原子(21)
• It seemed as if there was no end of strangeness. For the first time, as James Trefil has put it, scientists had encountered an area of the universe th...
• 8.万物简史 第206期:威力巨大的原子(20)
• What this means in practice is that you can never predict where an electron will be at any given moment. You can only list its probability of being th...
• 9.万物简史 第205期:威力巨大的原子(19)
• Finally, in 1926, Heisenberg came up with a celebrated compromise, producing a new discipline that came to be known as quantum mechanics. At the heart...
• 10.万物简史 第204期:威力巨大的原子(18)
• As it was, the Europeans had their hands full trying to understand the strange behavior of the electron. The principal problem they faced was that the...