X射线的发现

关于电的知识,在公元前3世纪,人们便已开始掌握.后来又经过富兰克林、伽伐尼、伏特、安培、欧姆、法拉第等许多科学家的研究,更加完善系统.到1643年,意大利的托里拆利发现了气压和真空,人们便又把真空和电联系在一起研究.将放电管抽空,再充入各种不同的气体,就会显示各种美丽的颜色.科学家还发现,这时放电管的阴极会发出射线,这种"阴极射线"能使几种荧光盐发光,还能使照相底片变黑.许多著名的科学家郁一次又一次地重复观察这种暗室里的神秘闪光.可是发现的幸运往往只能落在一个人头上,这个人就是德国维尔茨堡大学的教授伦琴(1845～1923).……

Numerical Analysis of Masonry Bell-Towers under Dynamic Loading

The seismic behavior of masonry bell-towers located in Corfu, Greece, is considered since constructions of this kind are particularly vulnerable to seismic loadings. Dynamics analyses for different total heights of Corfu bell-towers and according to the seismic data of this region are carried out. A diagram of displacements is determined. The impact of the percentages of damping in the distribution of displacements is examined.

Humbert＇s Self-defence for His Relation With Lolita

In Vladimir Nabokov＇s novel Lolita, we can find that Humbert tries to defend himself for his relation with Lolita. Humbert says Lolita has a precursor that is Annabel. That is pure love between children. Pure love is innocent, so Humbert wants to say he is not to blame. His relation with Lolita is pure love. In addition, Edgar Allan Poe wrote a poem about Annabel Lee. And Humbert wants to say that it is the poem that makes him love Lolita.

诺贝尔奖的创立者——诺贝尔

"我看不出我应该得到任何荣誉,我对此也没有兴趣。"说这句话的是一位伟大的科学家。他将遗产全部捐献出来,奖励向科学文化高峰努力攀登并取得杰出成就的人,自己却不求虚名,把毕生精力乃至生命都无私地贡献给了科学事业。今天,以他的名字命名的奖项,已经成为世界级大奖。他就是全世界家喻户晓的瑞典人诺贝尔。

点击成长必遇关键词

人在成长过程中,一些以往不曾在意或没能理解的词往往会随着年龄的增长而日益显现出它的魅力。如果你能有意识地亲近,用行动去积累这些词,使自己更早一些理解、懂得这些词的深刻内涵,那么,它们也许会对你的一生有很大的帮助,尤其是在人生的紧要之时,它们的力量也许更大。

明星和他们的宠物

明星养宠物已经成了一种时尚,有的艺人甚至还把发生在自己和宠物之间的故事写成了书。其实对那些每天都忙忙碌碌的大明星来讲,在孤独、郁闷的时候,有时也只有宠物能够抚慰他们。就让我们来看看明星与他们的宠儿的幸福生活吧。