文章列表

• 1.万物简史 第313期:地下的烈火(21)
• At that time, the lower forty-eight United States had not seen a volcanic eruption for over sixty-five years. 当时，美国本土的48个州在过去的65年里没有...
• 2.万物简史 第312期:地下的烈火(20)
• We may be going through a reversal now. 我们现在也许正经历一次逆转。 The Earth's magnetic field has diminished by perhaps as much as 6 percent in the ...
• 3.万物简史 第311期:地下的烈火(19)
• The outer core is in many ways even less well understood, though everyone is in agreement that it is fluid and that it is the seat of magnetism. 外核...
• 4.万物简史 第310期:地下的烈火(18)
• So all that can be said is that at some slightly indeterminate point as we head toward the center of Earth we leave the asthenosphere and plunge into ...
• 5.万物简史 第309期:地下的烈火(17)
• The hour hand on a clock moves about ten thousand times faster than the flowing rocks of the mantle. 钟面上时针的移动速度，比地幔岩石的流动速度，要快...
• 6.万物简史 第308期:地下的烈火(16)
• How and when the Earth got its crust are questions that divide geologists into two broad camps, 地球如何有了地壳，何时有了地壳，这两个问题把地质学家分...
• 7.万物简史 第307期:地下的烈火(15)
• So how much do we know about what's inside the Earth? Very little. 因此说，我们对地球的内部情况究竟了解多少？很少。 Scientists are generally agreed th...
• 8.万物简史 第306期:地下的烈火(14)
• Because we can't see into the Earth, we have to use other techniques, which mostly involve reading waves as they travel through the interior. 我们无法...
• 9.万物简史 第305期:地下的烈火(13)
• Four years later, Soviet scientists decided to try their luck on dry land. 4年以后，苏联科学家决定在陆地上碰碰运气。 They chose a spot on Russia's Kol...
• 10.万物简史 第304期:地下的烈火(12)
• And what causes these massive intraplate rupturings? 这种跨板块大地震是怎么发生的？ Something deep within the Earth. 原因在地球深处。 More than that w...