尽管“浅色服装原则”理论上听起来很正确,但其它一些影响因素可能会与这个理论相悖。至少,一些有说服力的证据表明,衣服的颜色并不重要。先来看看1980年发表在《自然》杂志的一项学术研究中的证据,该研究题目为“为什么贝都因人在炎热的沙漠里穿着黑色长袍?”
As you can guess, the researchers were as flummoxed as you and I by the fact that in oppressive heat, the residents of the Sinai desert wear billowing black robes instead of, say, white (or a maybe pretty pale lavender). What they found was when they tested white robes versus black (and note they did this by having some poor guy stand out in the heat while recording temperature), the differences were nil.
闷热的天气里,西奈沙漠的居民穿着黑色长袍,而不是白色的(或淡紫色的)。如你所料,研究人员就像你我一样对此感到困惑。他们发现,对白袍和黑袍进行测试时(研究人员让一些可怜的家伙站在酷热中,记录温度),两者的差异是零。
They found that the black clothing did absorb more heat, but that's where it stayed: In other words, the black soaks up additional heat, but that extra is lost by the time it actually gets to your skin. Way more useful for keeping cool, however? The fact that the robes are loose and billowing, to allow airflow.
研究人员发现,黑色的衣服确实吸收了更多的热量,但热量就此打住了。换句话说,黑色衣服吸收了额外的热量,但是当它真正接触到皮肤的时候,那些额外的热量已经消失了。穿黑色反而更能保持凉爽吗?事实上,是因为长袍宽大容易翻动,便于空气流动。
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