夏天穿黑衣或白衣感觉基本一致
文章来源:未知 文章作者:enread 发布时间:2018-03-30 08:20 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
Question: What do astronauts, brides and Tom Wolfe have in common? They all wear white to keep the heat at bay. Anyway, the sartorial1 thinking is this: floaty, breezy, delicate fabrics2 of the lightest colors allow all that solar heat fighting its way to our skin to just reflect away instead.
 
提问:宇航员、新娘和汤姆·沃尔夫(以穿白色西装而闻名的作家)的共同点是什么?答案就是,他们都穿白色衣服来保持凉爽。总之,这样穿着是考虑到:面料轻薄精致的浅色衣服能反射阳光,从而让光的热量难以接触我们的皮肤。
 
Wear dark fabrics, the idea goes, and you're stuck with that heat as it greedily absorbs into the fabric3 and causes you to swelter in your own clothes. But white clothing will cheerfully bounce that solar heat right off, and you'll be (more) comfortable on a hot day.
 
While all that certainly sounds great in theory, there are a few other factors at play that might be working against the light clothing adage4. At the very least, there's some compelling evidence that says it doesn't matter. Let's start with some 1980 academic research from the journal "Nature," titled "Why do Bedouins wear black robes in hot deserts?"
 
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 versus5 black (and note they did this by having some poor guy stand out in the heat while recording6 temperature), the differences were nil7.
 
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.
 
There's also an argument that the whole "light clothing" argument is missing a key element: the person who's wearing the clothes. This means that the heat your body radiates will actually reflect off white clothing, bouncing back to your body to keep you toastier. Not a bad theory, but it's not tested on humans.
 
So, the answer is -- it doesn't make a huge difference whether you're wearing black or white in hot weather.


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1 sartorial Rsny3     
adj.裁缝的
参考例句:
  • John has never been known for his sartorial elegance.约翰从来没有因为衣着讲究而出名。
  • Jeans a powerful egalitarian message,but are far more likely to a sartorial deathtrap for politicians.政客们穿上牛仔裤是传递亲民的讯息,但也更容易犯穿衣禁忌。
2 fabrics 678996eb9c1fa810d3b0cecef6c792b4     
织物( fabric的名词复数 ); 布; 构造; (建筑物的)结构(如墙、地面、屋顶):质地
参考例句:
  • cotton fabrics and synthetics 棉织物与合成织物
  • The fabrics are merchandised through a network of dealers. 通过经销网点销售纺织品。
3 fabric 3hezG     
n.织物,织品,布;构造,结构,组织
参考例句:
  • The fabric will spot easily.这种织品很容易玷污。
  • I don't like the pattern on the fabric.我不喜欢那块布料上的图案。
4 adage koSyd     
n.格言,古训
参考例句:
  • But the old adage that men grow into office has not proved true in my experience.但是,根据我的经验,人们所谓的工作岗位造就人材这句古话并不正确。
  • Her experience lends credence to the adage " We live and learn!"她的经验印证了一句格言: 活到老,学到老!
5 versus wi7wU     
prep.以…为对手,对;与…相比之下
参考例句:
  • The big match tonight is England versus Spain.今晚的大赛是英格兰对西班牙。
  • The most exciting game was Harvard versus Yale.最富紧张刺激的球赛是哈佛队对耶鲁队。
6 recording UktzJj     
n.录音,记录
参考例句:
  • How long will the recording of the song take?录下这首歌得花多少时间?
  • I want to play you a recording of the rehearsal.我想给你放一下彩排的录像。
7 nil 7GgxO     
n.无,全无,零
参考例句:
  • My knowledge of the subject is practically nil.我在这方面的知识几乎等于零。
  • Their legal rights are virtually nil.他们实际上毫无法律权利。
TAG标签: light white heat
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