Learning book knowledge, sometimes I feel very boring, because that is not understood.
I have seen a doctor Britain biology lecture to the British high school students a video on Youku TED, he said, the beginning of a high school teacher, he was very excited, very hard, preparing lessons every day, a lot of preparation, to tell his students a lot of knowledge of bacteria and viruses, and he considers that the information detailed enough, students should have learned a lot of knowledge.
Dr. lecture:
1, bacteria (Bacteria) is a large class of non-nuclear membrane wrapped nucleus, there is only referred to the original single-cell organisms intended nucleus (nuclear region) (or nucleoid) of naked DNA, including eubacteria (eubacteria) and ancient two groups endophytes (archaea). Commonly referred to is the narrow sense of the bacteria, the bacteria is a narrow class of prokaryotic microorganisms, is a kind of short fine shape, simple structure, and many more binary fission breeding prokaryotes, is the most widely distributed in nature, individuals the largest number of organisms, is a major player in material cycle of nature. Bad bacteria will destroy the body's immune system.
2, the virus (Virus) consists of one nucleic acid molecule (DNA or RNA) and protein (Protein) or only made up of proteins (e.g., prions). Virus individual small, simple structure. No virus cell structure, since the base system is not necessary for the metabolism achieved, so the virus can not replicate itself. But when it contacts into a host cell, then deproteinized jacket, which nucleic acid (gene) invade a host cell, which means replication system, according to an instruction new virus replication of viral genes. At present, the scientific community accepted definition for the virus can only replicate within the host cell alive source of infection.
However, contrary to expectations, the students fall asleep in class, do not understand, complain, they say: listen to your lecture, a little nauseated feeling! nausea!
what? Say it again? a little sick?
This time the doctor pushed to the cold water wells go.
But Dr. or different, he summed up next, oh, my face is the original target group do not know anything hairless lips of teenage students, you want them to listen to these profound truth, it is not difficult they do?
After Dr. reason to find, understand what next to do.
He used computer software to produce a lot of cartoon images to illustrate the bacteria and viruses, bacteria and the picture made a paper mold, viruses also make a hand-held spear enemies paper mold, presentations in class.
He said that when the virus to attack bacteria, first quietly lurking inside the bacteria, the bacteria disguised as internal staff, then took off his camouflage clothes, the use of internal bacterial replication (self-replicating virus do not have this feature), constantly clone himself, the team is also growing, but there is not even found in bacteria, the final copy of the virus will hold up to the gut bacteria, the bacteria like swelling up, which is why organ inflammation. Finally, the stomach bacteria are bursting at the seams, we lost a lot of blood and pus.
This lecture, the students suddenly found out that the students were very interesting!
Some will say that such explanations, too simple, the student does not learn the real essence of the knowledge of bacteria and viruses. It will be fraught.
But Dr. said that not everyone will become a biologist, and high school students do not need to remember those difficult to understand the profound truth, if a student is interested, he will grow up to continue their studies biology, and does not prevent him from becoming biological Dr. .
First, Richard Phillips Feynman (Richard Phillips Feynman), was born on May 11, 1918, a Jewish-American physicist, was awarded the Nobel Prize in Physics in 1965, it is also considered following the wisest theoretical physicist Albert Einstein.
When Feynman lectures at Princeton University, it is always fun in the classroom. He is good at dull, abstract knowledge with simple, accurate expression of figurative language out, come to listen to his class of students tumbled out of the classroom. The students recorded summary of all Feynman Lectures on Physics has been regarded as a classic of people engaged in physical and Bible.
Second, the nature of Feynman tips:
Feynman skills, plainly, is to understand the knowledge of a point, if you really understand, we will be able to find the reality is very simple, as a case in point to illustrate this knowledge. Knowledge on the books are often difficult to understand, because that is not written in real-life examples straightforward.
An analogy.
Someone asks you: What is Moore's law?
Book defines: Moore's Law means that the number of transistors on an IC can be accommodated, about 18 months will be doubled, the doubled every performance. Moore's Law is the result of long-term observation was discovered by Intel (Intel), chairman emeritus Gordon Moore (Gordon Moore).
Experts explain: Moore's Law is a simple rule of thumb to assess the progress of semiconductor technology, its significance lies in the long term, IC process technology based on a straight forward way to take forward so that the IC products can continue to reduce costs, improve performance, add functionality . Process more and more close to the physical limits of semiconductors, it will be difficult for them to narrow down.
我的理解：摩尔定律就是美国的英特尔集成电路公司的董事长(摩尔)说了一句话，就是经过长期观察得出一个结论（定律），集成电路（IC）的制造过程(制程)中，每过18个月（一年半），集成电路上可容纳的元件数量会增加一倍，功能也会增长一倍。
简单说来，就是在一个小瓶子中，要装很多东西，装的东面越多，瓶子的利用率就越高，但瓶子空间是有限制的，东西可以压缩，但是不可能无限压缩。随着技术进步，这个东西可能做成像头发丝一样，这样瓶子中装的东西就会越来越多，或者再比头发丝小一些，每过18个月，再小一倍，小到什么时候呢？
这大概就是摩尔定律的意思。
三、费曼学习技巧，总共分为四步：
第一步：选择一个你想要理解的概念。
第二步：假如你站在讲台前，你正要向别人传授这个概念。也就是说，你自己懂了后，还要给别人讲课。你说得清楚吗？
第三步：如果你的感觉是，总不能用简单的几句话来表达你的知识点，这就说明，你对知识的要点还没有彻底了解。
还要返回上一步，继续思考。
第四步：为了让你的讲解通俗易懂，用最简单的语言表达方式。如果做不到，请返回上一步。
原文出处:https://baijiahao.baidu.com/s?id=1609182376881097310&wfr=spider&for=pc