《比鱼肚白更白的鱼肚》的评论 https://headsalon.org/archives/1390.html A Salon for Heads, No Sofa for Ass Fri, 23 Jan 2026 05:27:46 +0000 hourly 1 https://wordpress.org/?v=4.2.38 作者：tcya https://headsalon.org/archives/1390.html#comment-713438 Mon, 16 Oct 2017 09:26:59 +0000 http://headsalon.org/?p=1390#comment-713438 刚又看到个例子，有一种鱼是倒着游的，它们的肚子就是黑的哈哈https://en.wikipedia.org/wiki/Upside-down_catfish

]]> 作者：tcya https://headsalon.org/archives/1390.html#comment-561169 Wed, 08 Apr 2015 19:33:32 +0000 http://headsalon.org/?p=1390#comment-561169 刚看到另一个相关例子，在大卫爱登堡的《自然珍品》第一集里提到：
变色龙当看到下方的蛇时会把肚子变白一些，看到上方的鸟时会把背变黑些。

]]> 作者：辉格 https://headsalon.org/archives/1390.html#comment-2640 Sun, 21 Aug 2011 09:04:43 +0000 http://headsalon.org/?p=1390#comment-2640 不信你可以去试试

]]> 作者：辉格 https://headsalon.org/archives/1390.html#comment-2639 Sun, 21 Aug 2011 09:03:56 +0000 http://headsalon.org/?p=1390#comment-2639 深水中光线漫射效果差，方向性强，因而白色的弥补效果微弱。试想黑夜中，一辆车的远光灯照着你，车前站着一个人，此时无论他穿的是黑衣还是白衣，在你眼里都是个黑影。

]]> 作者：tcya https://headsalon.org/archives/1390.html#comment-2636 Sun, 21 Aug 2011 02:30:44 +0000 http://headsalon.org/?p=1390#comment-2636 灵长类没有的原因是树林光线太暗还是叶子的斑驳影子起到了条纹的作用？应该是后者吧。
为什么深水鱼肚白会失效没看懂啊，coutershading的词条里也说了Alternatively, in many marine animals (including various species of fish such as marlins and sharks, penguins and cephalopods) this form of camouflage may work through background matching; when seen from the top, the darker dorsal area of the animal blends into the darkness of the water below, and when seen from below, the lighter ventral area blends into the sunlight from the surface.这跟我想的一样，从下面看白色不也就相当于弥补被遮挡的光线吗，当然有个灯可能更好，但好像并不会失效吧，而且为什么深水里天地总是从下面来呢，我怎么觉得游的浅的容易被从下方攻击

]]> 作者：gaohan_cn https://headsalon.org/archives/1390.html#comment-563 Wed, 01 Dec 2010 08:40:24 +0000 http://headsalon.org/?p=1390#comment-563 也是。

]]> 作者：辉格 https://headsalon.org/archives/1390.html#comment-558 Wed, 01 Dec 2010 03:57:20 +0000 http://headsalon.org/?p=1390#comment-558 水太深，看不懂。我不爱琢磨这些近期发生的事情，这么做的收获/投入比例太低了，劳神而无所获，何乐而为之？写时评，那是挣钱糊口没办法，呵呵。

]]> 作者：gaohan_cn https://headsalon.org/archives/1390.html#comment-554 Tue, 30 Nov 2010 16:17:58 +0000 http://headsalon.org/?p=1390#comment-554 http://online.wsj.com/article/SB10001424052748704584804575644031813953758.html?mod=WSJEUROPE_hpp_LEFTTopStories
The most serious allegation in the cables is that China repeatedly turned a blind eye to shipments of missile components through Beijing on commercial flights operated by Air Iran, the Iranian national carrier, and Air Koryo, the North Korean one.

It is unclear whether China complied, but the cable complained that at least 10 similar deliveries had been allowed to proceed despite U.S. requests for them to be halted.
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楼主，你说这是不是有点恨。。

]]> 作者：gaohan_cn https://headsalon.org/archives/1390.html#comment-547 Mon, 29 Nov 2010 23:58:45 +0000 http://headsalon.org/?p=1390#comment-547 感觉有理。。。哈哈

]]> 作者：辉格 https://headsalon.org/archives/1390.html#comment-539 Mon, 29 Nov 2010 13:25:41 +0000 http://headsalon.org/?p=1390#comment-539 好吧，我白头发多，以后多晒晒太阳。

]]> 作者：dunang https://headsalon.org/archives/1390.html#comment-534 Mon, 29 Nov 2010 09:14:50 +0000 http://headsalon.org/?p=1390#comment-534 大部分四足行走的动物，腹部的颜色总是比背部的浅——大哥，那是太阳晒的，好嘛。

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