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第59章 对面何人(1 / 2)

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望远镜这东西,你说技术含量高吧,倒也没什么,就是简单的凸透镜叠加;你说技术含量低吧,单是透镜制作,便是个技术难题!

早年间,刘纬所使用的单筒望远镜,是采用透明水晶磨制而成的透镜,成本相当高!

没办法啊,虽然刘纬也懂点烧制玻璃的原理,可造出的玻璃,却总是含有杂质和杂色,以及气泡和裂痕,无法做到清澈透明,一趟下西洋之旅,他终于从埃及人那里学来了烧制玻璃的技术,造出了无色透明玻璃!

过去的玻璃为什么总有杂色?竟是铁元素在作祟!石英砂当中,难免会存有一些细小的含铁颗粒,很难剔除干净,埃及人呢,则是利用带磁性的铁网过滤,最大限度筛除了这种含铁颗粒,所以烧出来的玻璃更加透明!

另外,埃及人还在烧制玻璃的过程中,添加一定剂量的氧化镁和氧化铝等物质,如此一来,烧出的玻璃不仅透明度更高,也更加结实耐用!

总之,刘纬学会了烧制玻璃的技术以后,整个汉国都因此而大变模样,灯泡比从前更亮了,房屋门窗都换上透明玻璃,比从前的窗棂纸更保温,更透亮!

此外,一项更加伟大的发明,也同时诞生了,就是眼镜!古人也有近视眼,老花眼更是十分普遍,视物模糊,视力受限等问题,令许多人很是头疼,如今,随着眼镜的发明,还视力问题者一个清晰的世界,其中意义,非同小可!

再有,就是望远镜的普及使用成为了现实!水晶多贵啊,几个人能用得起?但换成物美价廉的玻璃透镜,可就便宜多了,汉军上下早已普遍配发了望远镜,不仅军官的手里有,普通哨兵和侦察兵的手里也有!

这就是为什么,司马懿的手里,也有望远镜的原因了!刘纬对此根本就没有保密,因为普遍配发于军中,就难免被晋国偷去、抢去或缴获而去,索性,如同电报机一样,直接公开拿出来卖,价格嘛,自然很贵!

这种“千里眼”,晋国造不出来,就只能买喽,总比偷容易得多吧?所以,司马懿的手里有望远镜,一点不奇怪,只是售价太贵,晋军上下,也只有一些高级军官手里配有望远镜,基层军官和普通士兵可没有!

这就是为什么,之前那个探马说,大雪当中,视野受限,实在看不清敌人样貌的原因;同时,也是为什么司马懿能够发现,对面开枪的汉军,竟然身着白衣白衫,隐匿于雪地当中的原因,没有望远镜,又下那么大的雪,凭肉眼,根本看不到!

司马懿看到了,邓艾也看到了,因为他也有望远镜!多年的作战经验使他立刻明白,对岸开枪的汉军,身着白衣,分明有利用大雪天气,隐藏行踪,悄悄迂回进攻的意图!

看来,对岸的汉军,并非一股小部队,而是成编制的军团,先头部队交火以后,对面的指挥官与司马懿想到一起去了,也想派出一支分队,侧翼迂回!

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