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环球科学

迷失的人走不了直线，只能反复兜圈圈？｜科学60秒

环领研网约 2 分钟

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迷路的人走不了直线
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@愚木混株 cdd20 on Unsplash
当你驱车来到一片茂密的树林，下车走进树林里散步，在徘徊了几个小时试图找到回到车上的路后，你意识到：这几个小时你基本上就是在兜圈子。不只你一个人会这样，科学家发现，在没有可见的地标或来自太阳指引的情况下，迷路的人是没有办法走直线的。
“迷失方向的旅行者一直在兜圈子”，许多虚构作品中真实地表现出了这一点，于是科学家决定对这个说法进行测试。他们把六名受试者扔进了德国的森林里，并告诉他们试着朝一个方向走直线，然后通过GPS监控受试者的进度。
在阴天时，受试者确实是在绕着圈子走，但也不是一直朝一个方向转弯，而是随机地向左和向右转向，反复穿过已经走过的路；但是当受试者可以看到太阳时……[查看全文]

Round and Round We Go

Maybe it's happened to you. You go for a walk in the woods and, after wandering around for a few hours trying to find your way back to the car, you realize that you've basically been walking in circles. Well, you're not alone. Because scientists have found that, in the absence of visible landmarks or cues from the sun, people who are lost can't walk a straight line.

The "disoriented traveler walking in circles" is faithfully trotted out in many fictional works. So scientists decided to put the tale to the test. The

y plopped six people into a German forest and told them to try to walk straight. And they monitored their subjects' progress by GPS.

When the day was cloudy, the wanderers indeed walked in circles, but not by turning consistently in one direction. Instead the

y veered randomly left and right, repeatedly crossing their own paths. But when the subjects could see the sun...[full transcript]

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