正文
閑聊隕石和流星雨
小河溝，2013-2-16
一場流星雨15日墜落在俄羅斯，造成上千人受傷。世界上最大最近的隕石災難也發生在俄羅斯，1908年通古斯大爆炸後是最具破壞性的隕石撞擊地球事件。當年，一塊隕石墜落西伯利亞通古斯，摧毀了2000多平方公裏的森林。恐龍滅絕據說是六千五百萬年前的一顆小行星撞擊地球導致的。
給人感覺，地球兩極受天外來客，隕石的襲擊可能性比其它地區要大得多。其實地球上各個地方受到隕石襲擊的概率是一樣的。中國史料中有超過700次隕石記錄，埃及也有大量流星雨記錄。
隻不過西伯利亞氣溫低，降落在那裏的隕石不易在空中燃燒，著地後大多會鑽入冰麵以下，在寒冷潔淨的自然條件下，隕石會被容易保存下來， 特別是純鐵隕石。蒙古人當年能橫掃歐亞大陸， 就是在西伯利亞找到大量純鐵隕石，可以發明鐵鉚釘，木芯包鐵皮鐙，鐵箭頭和狼牙棒。鐵鐙增加機動力，鐵箭頭射程遠穿透力強，狼牙棒近身肉搏威力大。隕石鐵礦甚至保證蒙古人能大量生產鐵製刀叉，鐵盤。鐵製餐具容易清潔， 保證衛生，俗話說病從口入。
15日的流星雨，有俄羅斯議員認為是美國在搞新武器實驗，這顯然是道聽途說。不過，距俄羅斯遭隕石襲擊不到兩天，一顆小行星質量為13萬噸，直徑約50米，運行速度每秒13公裏，安全“擦”過地球。
如果它撞擊地球，可以夷平整個紐約巿，比911要厲害多了。從理論上講，利用航天器或核武器轟擊小行星，可以令其改變軌道，經過精確計算，運用簡單的彈性碰撞，象打台球一樣，角度對了， 是可以人為製造流星雨的。
（20 分鍾寫完）
Small meteorites and meteor shower
Danny Li , 2013-2-16
The meteorite (or Fireball explosion) exploded over Russia, more than 1,000 were injured. The Tunguska event happened in Russia as well. It was an enormously powerful explosion that happened in 1908. The explosion is believed to have been caused by the air burst of a large meteoroid at an altitude of 5–10 kilometres above the Earth's surface.
The mass extinctions of dinosaurs are believed to have been caused by the meteor showers that have changed the climate of the Earth.
The north pole feels like more probable to be attacked by meteorites than other area. In fact, all the countries in the world have the same probability to have meteor showers. China has more 700 meteorites record in history, and Egypt has even more.
Maybe the meteorites are not so easy to explode as in the other area due to the low air temperature in Siberian. The meteorites can get into the snow easily, and especially the iron meteorites can be kept well by the clean and cold climate in Siberian. The Mongolian found enormous iron meteorites in Siberian, by which they could have make iron rivets, stirrups, arrow heads and spiked clubs. the iron stirrups increased the mobility of the Mongolian riders, the iron arrow heads had more penetrating power and longer shooting distance, the iron spike clubs were more powerful weapons. The iron meteorites could even allow the Mongolian to produce the eating utensils such as knives, spoons and forks that were more clean and safer.
It was reported that a Russian Parliament member suspected a US new weapon, which is ridiculous. On the other side, a small planet, diameter 50 M, has passed by the Earth after the explosion of the meteoroid.
It can destroy the whole New York city that is much worse than 911, if it bumps into the Earth. Theoretically the orbit of small planet can be changed by the impacted by a space shuttle or a Nuke, just like billiard, it can be a kind of man-made meteor shower.
(20 minutes translation)
小河溝，2013-2-16
一場流星雨15日墜落在俄羅斯，造成上千人受傷。世界上最大最近的隕石災難也發生在俄羅斯，1908年通古斯大爆炸後是最具破壞性的隕石撞擊地球事件。當年，一塊隕石墜落西伯利亞通古斯，摧毀了2000多平方公裏的森林。恐龍滅絕據說是六千五百萬年前的一顆小行星撞擊地球導致的。
給人感覺，地球兩極受天外來客，隕石的襲擊可能性比其它地區要大得多。其實地球上各個地方受到隕石襲擊的概率是一樣的。中國史料中有超過700次隕石記錄，埃及也有大量流星雨記錄。
隻不過西伯利亞氣溫低，降落在那裏的隕石不易在空中燃燒，著地後大多會鑽入冰麵以下，在寒冷潔淨的自然條件下，隕石會被容易保存下來， 特別是純鐵隕石。蒙古人當年能橫掃歐亞大陸， 就是在西伯利亞找到大量純鐵隕石，可以發明鐵鉚釘，木芯包鐵皮鐙，鐵箭頭和狼牙棒。鐵鐙增加機動力，鐵箭頭射程遠穿透力強，狼牙棒近身肉搏威力大。隕石鐵礦甚至保證蒙古人能大量生產鐵製刀叉，鐵盤。鐵製餐具容易清潔， 保證衛生，俗話說病從口入。
15日的流星雨，有俄羅斯議員認為是美國在搞新武器實驗，這顯然是道聽途說。不過，距俄羅斯遭隕石襲擊不到兩天，一顆小行星質量為13萬噸，直徑約50米，運行速度每秒13公裏，安全“擦”過地球。
如果它撞擊地球，可以夷平整個紐約巿，比911要厲害多了。從理論上講，利用航天器或核武器轟擊小行星，可以令其改變軌道，經過精確計算，運用簡單的彈性碰撞，象打台球一樣，角度對了， 是可以人為製造流星雨的。
（20 分鍾寫完）
Small meteorites and meteor shower
Danny Li , 2013-2-16
The meteorite (or Fireball explosion) exploded over Russia, more than 1,000 were injured. The Tunguska event happened in Russia as well. It was an enormously powerful explosion that happened in 1908. The explosion is believed to have been caused by the air burst of a large meteoroid at an altitude of 5–10 kilometres above the Earth's surface.
The mass extinctions of dinosaurs are believed to have been caused by the meteor showers that have changed the climate of the Earth.
The north pole feels like more probable to be attacked by meteorites than other area. In fact, all the countries in the world have the same probability to have meteor showers. China has more 700 meteorites record in history, and Egypt has even more.
Maybe the meteorites are not so easy to explode as in the other area due to the low air temperature in Siberian. The meteorites can get into the snow easily, and especially the iron meteorites can be kept well by the clean and cold climate in Siberian. The Mongolian found enormous iron meteorites in Siberian, by which they could have make iron rivets, stirrups, arrow heads and spiked clubs. the iron stirrups increased the mobility of the Mongolian riders, the iron arrow heads had more penetrating power and longer shooting distance, the iron spike clubs were more powerful weapons. The iron meteorites could even allow the Mongolian to produce the eating utensils such as knives, spoons and forks that were more clean and safer.
It was reported that a Russian Parliament member suspected a US new weapon, which is ridiculous. On the other side, a small planet, diameter 50 M, has passed by the Earth after the explosion of the meteoroid.
It can destroy the whole New York city that is much worse than 911, if it bumps into the Earth. Theoretically the orbit of small planet can be changed by the impacted by a space shuttle or a Nuke, just like billiard, it can be a kind of man-made meteor shower.
(20 minutes translation)
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