推荐回答(1个)
1794年英国物理学家、化学家道尔顿(1766~1844)在曼彻斯特教数学和哲学。
在他母亲70岁生日那天(一说为1793年圣诞节那天),道尔顿给老人家买了一双蓝色的袜子,高高兴兴地给母亲送去,作为生日礼物。母亲接过一看,愣住了,说:“孩子,你给妈买礼物,妈很高兴,但这么鲜嫩的颜色怎么穿得出去啊?”道尔顿听了很惊奇,回答说:“妈,这是一双蓝色的袜子,正适合您,您怎么说颜色很鲜嫩呢?”母亲回答说:“这哪里是蓝色,这是樱桃红色啊!”一个说是蓝色,一个却说是樱桃红色,真是说不清。
只好叫来弟弟当“裁判”,弟弟也说是蓝色,可老人家还坚持说是樱桃红色。于是道尔顿又叫来街坊四邻,但他们都说是樱桃红。道尔顿顿时纳闷起来:为什么同一种颜色由不同的人看,会“变”成不同颜色呢?
这时,道尔顿又回想起以前类似的情况。小时候一年的秋天,他和小伙伴到苹果园摘苹果吃,其他人都摘红的熟透的吃,而他却摘青的吃,酸得难以入口,小伙伴都笑他。又有一次,一队穿红色军装的士兵从街上走过,他说军装是暗灰色。1792年夏,他看到白天本来是蓝色的天竺葵花,却变成暗红色,一连几天都如此……
想到这些情景,道尔顿越发纳闷起来。这究竟是怎么回事呢?
道尔顿是个有心人,他没有在这一怪异现象面前止步,而是对此进行认真研究,最后得出结论:他和弟弟都患有一种病——色盲病。他还专门写出了《论色盲病》的论文。
可见,色盲病和色盲病人都是道尔顿偶然发现的。由于色盲病是道尔顿最早发现的,所以后人又把它称为“道尔顿病”。
色盲病患者一般有5种。缺乏辨别红色能力者叫“红色盲”;不能辨别绿色者叫“绿色盲”;不能辨别紫色者叫“紫色盲”;红绿两色都不能辨别者叫“全色盲”。“全色盲”很少见。色盲是怎样发生的,目前还不清楚,一般认为是先天遗传造成的,即父母有色盲,其孩子就有可能是色盲。至于因视神经或视网膜得病引起的则很少见。男的比女的患色盲多5~6倍,这是因为先天遗传有规律性,例如:父母若都有色盲,则其儿子必定是色盲,而女儿则是带色盲病者,不一定是色盲。所谓带色盲者,就是本人没有色盲,但婚后所生儿子半数有色盲,女儿则半数是带色盲者。所以男色盲比女色盲多。色盲病人不宜从事有关辨别颜色的工作。1875年瑞典发生过一起火车互撞事故,就是因火车司机是一位色盲病人所造成的,从此这种病引起了人们的注意。目前,还没有治疗色盲的好办法。
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