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人类对自己的摇篮——地球的认识,自古以来,既有许多美好的传说,也有不少迷茫的误解。随着时代的进步,人类对地球逐渐有了比较全面深刻的了解。现代科学技术的高速发展,科学家对地球的研究日益精深,又有许多新发现,所以人类必须不断地重新认识地球。 一、地球的质量在增加 自从牛顿发现万有引力定律以来,人类将它应用于天文学上,算出地球的质量是5.98×10~(24)千克,其实这个数据除了“粗略”之外,还具有“瞬时”性。据有关科学家研究测算,每年约有千万吨“宇宙灰尘”落在地球上(当然包括各种陨石之类),这些“灰尘”除了部分可
Mankind’s own cradle - Earth’s understanding since ancient times, both the many beautiful legends, there are many confused misunderstandings. With the progress of the times, human beings have gradually gained a more profound understanding of the Earth. The rapid development of modern science and technology, scientists increasingly sophisticated study of the Earth, there are many new discoveries, so humans must continue to re-recognize the Earth. First, the Earth’s mass is increasing Since Newton’s discovery of the law of gravity, human beings have applied it to astronomy, calculating the mass of the earth as 5.98 × 10 ~ (24) kg. In fact, this data has “instantaneous” “Sex. According to the calculations of scientists, there are about 10 million tons of ”cosmic dust" falling on the earth every year (of course, including various meteorites and the like), and these dusts can be partially or completely removed