The invention of super glue is a quite interesting fact. Nowadays it is almost impossible to do without super glue: either a handle of your cup broke off, or your shoes got ripped, or the plinth fell off. In these and many other cases The Super Glue is our only lifesaver.
So how was it invented? Back then it was considered a really big discovery, which was accompanied with various myths and legends, as per usual. You won’t believe it but for a quite long period of time it was widely believed that this glue was primarily intended for gluing the wounds.
It is rather weird assumption, but quite explainable, as the glue was discovered during World War II by American scientist. By the way, it was a pure accident: in a search for materials to make clear plastic gun sights, a team of scientists stumbled upon cyanoacrylate that stuck to everything that it came in contact with. This discovery occurred to be very useful and was patented in 1995. In 1959 it was already being shown on TV.
For a long time the Super glue had been showing up on different American talk-shows, where its new fascinating features were discovered. Cyanoacrylate could glue together anything, even unprotected surfaces. The crucial problem of this glue is not gluing things too tightly, but the impossibility of separating them afterwards.
Hi Max! I was very glad to hear from you. I haven't written for ages because of my school activities.
Today we have discussed a very interesting question about studying English at school. I think that learning English at school has become too complex. I believe that a great number of grammar rules, that are never used by native speakers, are no way justified. I agree that we need to learn a lot of words and expressions, because we want to feel confident in any situation and be able to maintain a conversation on any topic, at least at the elementary level. But never and nowhere, in no film or interview, you hear the verbs, for example, in the Past Perfect Continuous or in the other complex tenses, so to say, "fancy". Sure, it is necessary to be aware of the presence of these grammatical structures, but not to the same degree. That is why I believe that the English language that we learn at school, should be simplified to the level of conversation and almost elementary, commonly used grammar rules. What do you think about it? What is your oppinion?
That's all for me for today. I have to go to the swimming pool. Best regards to your family. Write soon. Alex
1.Paper 2.Plastik
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1 бумага 2 пластик , сейчас ещё пришлю