Urgent! ! ! ! ! ! ! Who has an eclipse paper on pinhole imaging?

Small hole imaging to see the solar eclipse

Today is a special day. The solar eclipse is being broadcast on TV channel n. Seeing the key joints, I can't help but go out of my house and feel it with my naked eyes.

In Qingdao, there is no total solar eclipse, only partial solar eclipse. The maximum time is around 9: 30 in the morning, and the sun is blocked by about 30%. I just feel that the world is still bright, but it is much milder and the air is much cooler, just like the feeling around six o'clock in the morning. Many passers-by are surprised by this. I think it is easy to explain. You think the intensity of the sun has decreased by 30%. Can it not be cool? At this time, the distance between passers-by has also narrowed a lot. Whether you know it or not, you can have a few words. At the bus stop, I saw a white boy holding a CD. I can see the invisible sun from the round hole in the middle of the CD. The white boy said to the young man in China next to him, it doesn't hurt his eyes-this white boy is fluent in Chinese and may be an international student studying languages in Qingdao. China guy said, it doesn't make sense, usually can also see this kind of image. I said it makes sense. Isn't this the principle of pinhole imaging? The hole of an optical disk is usually not a pinhole, but it is a pinhole compared with the size of the sun.

When I got home, I showed my daughter the method of disc observation. Daughter added, she said that holes don't have to be round, irregular shapes are ok, and no CD is needed. Then I found a piece of paper, cut an irregular hole and tried it in the sun. Sure enough, I can also show the image of the solar eclipse. It is true that Little Phoenix knows better than Old Phoenix.

Today's TV broadcast is unprecedented in scale, and the solar eclipse is being broadcast everywhere. I really don't understand. It's so exciting for an eclipse, isn't it? Later, the guest analysis of Zhejiang and Taiwan moved me. It was wonderful, indeed, as for! Why? Because it has three elements: politics, economy and science.

In ancient China, the solar eclipse was also called "Tengu eats the moon". When the solar eclipse occurs, people should beat gongs and drums, pots and pans, scare off the Tengu and defend the sun. Visible folk psychology, think this is an unlucky day. Astrologers and fortune tellers combine theory with practice and use solar eclipses to explain some things in reality-often the rise and fall of state affairs and society. This year, it is unusual that there have been n cases. If it is explained by a folk expert once, it will cause unpleasant associations. This is what the government does not want. Therefore, publicity should be in place to prevent deviation.

From an economic point of view, any action on empty streets has economic value. So many people go to the wild, eat and drink Lazar, burn gasoline, which one can't rely on RMB to escort? Didn't this contribute a few percentage points to the growth of chicken fart? Therefore, we should create momentum and encourage it. It is said that a small shop in Zhejiang bought 1.6 million just for observing glasses. One observation mirror earns 50 cents, that is, 80,000 yuan, one earns 1 yuan, that is,160,000, one earns 2 yuan, that is, 320,000 yuan, and one ... Hey, wait, how much can the observation mirror earn? Oh, forget it, anyway, such a small special tool can bring so many benefits. Isn't the arrival of countless foreigners more expensive? Hey, hey, to boost the economy, we need to vigorously promote it.

From the perspective of popularizing scientific knowledge, of course, we should pay attention to the eclipse once every few hundred years and how many papers can be published. However, this is a matter for a few people and nothing for ordinary people. The thing for ordinary people is to understand that the solar eclipse is an astronomical phenomenon, and it has nothing to do with whether there are tengu or whether they eat the moon. As for the unity of man and nature, the story of hanging an elephant in the sky calls him a dog, just ignore it. Considering that there are still many culturally backward areas in China, this kind of publicity seems appropriate. This should be the first task of the solar eclipse broadcast. But that's not the main reason. Science has always been a junior in China, and there are few opportunities to be the boss. During the New Culture Movement, when Mr. and Mr. Sai were mentioned, science became the second or tied for the first place, and then it became a masterpiece. In today's society, Marshal Zhao Gong has been promoted and the political commissar has taken a back seat. The third place in science may be unstable, just as a tool to accompany the bottom. Is this the true image of science or the sorrow of science?