曾经有这样一个传说:公元前215年,罗马将领马塞拉斯率大军乘战舰攻打古希腊名城叙拉古。古希腊数学家、物理学家阿基米德,利用凹面镜的聚光作用,把阳光集中到一点照射到罗马战船上,烧毁了不少罗马战船。这个传说是真是假?不久前,美国科学家们用300平方英尺的黄铜和玻璃制成了一 There was such a legend that in 215 BC, the generals led the Roman army of Massel to attack the ancient Greek city of Syracuse by battleship. Ancient Greek mathematician and physicist Archimedes, the use of concave mirror condenser effect, the sun focused on the point of exposure to the Roman warships, burned a lot of Roman warships. Is this legend true or false? Not long ago, American scientists made a 300-square-foot piece of brass and glass