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在美国的沙漠里,有一种极毒的响尾蛇。它的眼睛已经退化,几乎成为瞎子。但它却是捕鼠能手,捕捉时的动作是那样灵敏和准确。这是怎么回事儿呢?经过研究,发现在响尾蛇的眼睛前下方,有个凹下的小窝,里面长着一个对红外线非常敏感的“探热器”。它的这个神秘“装置”是一小块薄膜,厚度不过10～15微米(1000微米等于1毫米),却能够接受波长为0.01毫米的红外线。当热体的红外线投射到“探热器”时,就能发出信息,从而让响尾蛇知道热体所处的准确位置。即使是夜间,爬虫、老鼠、小兽已入睡了,但是它们仍有体温,仍会不断地发出红外线,响尾蛇凭着它奇妙的“探热器”,就能感知它们的存在,准确无误地把它们逮住。哪怕热体
In the American desert, there is a very toxic rattlesnake. Its eyes have been degraded and almost become blind. But it is a trapping hand, when capturing the action is so sensitive and accurate. What happened? After a study, it was found that there was a sunken cave in front of the rattlesnake's eyes with a “heat-tracer” that was very infrared-sensitive. Its mysterious “device” is a small piece of film that is 10 to 15 microns thick (1,000 microns equals 1 millimeter) but capable of accepting infrared light with a wavelength of 0.01 millimeter. As the infrared of the thermal body casts to the “heat-tracer,” a message can be sent that tells the rattlesnake the exact location of the heat. Even at night, reptiles, mice, and small animals have fallen asleep, but they still have body temperature and will continue to emit infrared rays. With their wonderful “heat detectors”, the rattlesnake can sense their existence and accurately They catch. Even heat