Mirror（老镜，镜仙）先生提出了一个问题：火是什么？ 鬼王李亚辉认为这是一个令人误入歧途的问题。引起了大家的思考。详情见鬼王博文： 火是什么？献给老镜 http://www.sciencenet.cn/m/user_content.aspx?id=275937 王修慧先生对这个问题进行了回答： 以飞蛾扑火之勇气和亮剑之精神扑向火坑 http://www.sciencenet.cn/m/user_content.aspx?id=276187 最后的结论是： 什么是火？火是一种部分电离、能发光放热的、能导电的高温气体混合物或曰半等离子体！ 我觉得王先生真的被误入歧途了。他回答的是什么是火焰的问题。 就我个人观点来说，火是人类很早就有的概念。要回答这个问题，需要从人们在日常生活中对火这个词的使用情况回答。我的回答是： 火是人类可以感知的燃烧现象。 为什么这样说呢，火肯定与燃烧有关，没有燃烧就没有火。人类可以感知的燃烧现象，意味着人类可以看得见。有火苗是火，有冒烟现象也是火，没有火苗没有冒烟只有火炭在燃烧也是火。 火没有明确的物理定义和化学定义，是很早就存在于人类生活中的一个概念。 火的英文单词是FIRE。我们看看英文字典是怎么解释的？ WordNet English Dictionary fire n. 1 . the event of something burning (often destructive) they lost everything in the fire 2 . the process of combustion of inflammable materials producing heat and light and (often) smoke; flame , flaming fire was one of our ancestors' first discoveries 3 . the act of firing weapons or artillery at an enemy; firing hold your fire until you can see the whites of their eyes they retreated in the face of withering enemy fire 4 . a fireplace in which a relatively small fire is burning they sat by the fire and talked 5 . intense adverse criticism; attack , flak , flack , blast Clinton directed his fire at the Republican Party the government has come under attack don't give me any flak 6 . feelings of great warmth and intensity; ardor , ardour , fervor , fervour , fervency , fervidness he spoke with great ardor 7 . once thought to be one of four elements composing the universe (Empedocles) 8 . a severe trial he went through fire and damnation v. 1 . start firing a weapon; open fire 2 . cause to go off; discharge fire a gun fire a bullet 3 . bake in a kiln so as to harden fire pottery 4 . terminate the employment of; give notice , can , dismiss , give the axe , send away , sack , force out , give the sack , terminate The boss fired his secretary today The company terminated 25% of its workers 5 . go off or discharge; discharge , go off The gun fired 6 . drive out or away by or as if by fire The soldiers were fired Surrender fires the cold skepticism 7 . call forth (emotions, feelings, and responses); arouse , elicit , enkindle , kindle , evoke , raise , provoke arouse pity raise a smile evoke sympathy 8 . destroy by fire; burn , burn down They burned the house and his diaries 9 . provide with fuel; fuel Oil fires the furnace 仔细看英文解释第1条和第2条，从上述解释可以看出，火的基本意义是指一种燃烧现象。 还有其它英文字典，其解释是类似的。 由此可以看出，搞清楚概念很重要。 如果我们概念都不明确就回答问题，容易南辕北辙。 此外，由于现代科学的历史不长，人类常用的很多概念和表达按照现代科学认知是完全错误的。我列出一些词语和表达： 彩虹、蓝色的大海、蓝天、 太阳升起、太阳落山、心爱的人、心肝宝贝、 黄金、火山、白衣等等。
标签: 李亚辉
