雪为什么是白色的?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 07 - t12:35:24z //www.hoelymoley.com/feeds/question/7846 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/7846 12 雪为什么是白色的? 斯里兰卡Ram //www.hoelymoley.com/users/5798 2016 - 04 - 16 - t06:56:55z 2016 - 11 - 26 - t05:05:35z < p >雪是水冰结晶的沉淀片的形式,从云。为什么不是一个颜色吗? < / p > //www.hoelymoley.com/questions/7846/-/7847 # 7847 15 回答戈登·斯坦格为什么雪是白色的吗? 戈登斯坦格 //www.hoelymoley.com/users/4507 2016 - 04 - 16 - t07:38:43z 2016 - 04 - 16 - t07:38:43z < p >积雪反照率非常高。实际上,它反映了所有波长的可见光谱,同时吸收特定波长。因此眼睛平均多个反射波长一样“白色”——与最细粒状固体。< / p > //www.hoelymoley.com/questions/7846/-/7851 # 7851 16 答案由杰克·怀特为雪为什么是白色的? 杰克·怀特 //www.hoelymoley.com/users/5809 2016 - 04 - 17 - t00:12:05z 2016 - 04 - 17 - t00:12:05z < p >正常冰(如冷冻冰块)主要有均匀的晶体结构,水分子在一个完美的六角网格,使它是透明的。< / p >

Not all ice is like that - for example, if you freeze water that contains tiny water bubbles due to a faucet aerator, the resulting ice would likely look white because the tiny air bubbles get frozen too, their edges forming multitudes of tiny prisms that produce all colours of the rainbow, averaged as white or bluish white.

Snowflakes are made of very fine structures of ice, thus also forming such prisms, also looking white as the result. Because their structure ranges widely, some snowflakes are more transparent than others, but almost all look white regardless. Snow is in fact semi-transparent too, easily evidenced when a thin layer of it covers a coloured surface, and also by shining some light through it.

Under a good microscope, a small portion of a snowflake may look like a transparent ice structure, sporting rainbow colours on the edges. However as you zoom out, finer parts blur and start to look more white. Some snowflakes have more finer details and impurities that can be captured with average optical microscopes so they appear white even magnified.

'White' colour itself is just how we describe achromatic (non-tinted) light. Further, human eyes adjust to lighting colour to treat it as white. If you project tinted light onto snow, it would of course look tinted. However, it may look less tinted than paper in similar conditions because snow tends to reflect light coming from every angle better.

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