Original title: pupil this operation, the National Astronomical frighten "stutter"......
Let's hear Wen Wen's implicit and restrained character in the community.
Speaking of our national genius, besides planting vegetables, we probably eat.
The characteristics of eating and eating are engraved on our bones. Even if we eat something that we can't eat, we can see it from it.
For example, "China sky eye" FAST, the whole name is called "500 meter diameter spherical radio telescope", at first glance, this... Isn't it a big pot?
A good pot, you can't waste it! So, our little friends...
China's astronomy is quick to "stutter"...
This morning, the National Astronomical officer issued the above picture, which is full of unbelievable characters. Before long, this picture attracted the attention of netizens.
How can I blame a little friend?
It can only be said that it is worthy of the next generation. But look at the comment area. No! Hard! Food!
It doesn't matter if you don't have a hard dish. We'll come by ourselves.
Come, it's your favorite crayfish!
The Kun can't be boiled, and the steamed fish come in?
Mother said that the staple food should also be eaten well. So... A dish of dumplings, right?
Since it is a pot, how can we lose our favorite -- hotpot?
Frying and frying is really a very versatile pot!
Care for the next generation of users and even enthusiastically set up the kitchen guidance building in the commentary area.
The name of "eating goods" is really not a saying.
Although the oral commentary in the commentary area is very happy, but in the final analysis, actually... FAST this pot is leaking.
The voice of the Chinese Academy of Sciences has shown us the correct way to eat this pot.
FAST "big pot" and "pot edge" are girders with a diameter of about 500 meters, a height of 5.5 meters and a width of 11 meters, and are supported by 50 platforms. Considering the thermal expansion and cold contraction, the designer skillfully enables the bearing to slide.
"Pot surface" is more special, first "weave" the network consisting of 6670 main cables, then 4450 pieces of border length in 10.4 meters - 12.4 meters, 427 - 482.5 kg, thick about 1.3 millimeter aluminum reflection surface unit, in turn on the cable net. The crisscross cable net can adjust the position of the reflector panel, and finally form the 300 meter instantaneous paraboloid.
"The bottom of the pot" is more interesting. The platform of the feed cabin is located at the bottom of the center of the active reflector. The feed cabin, which weighs about 30 tons, is evenly distributed under the action of the 6 supporting towers around the "pot" and is suspended at 80 meters from the ground.
On the "science goal menu" put forward by FAST, the top priority is "inspecting the neutral hydrogen of the universe". Neutral hydrogen is a hydrogen atom in the universe that does not gather into stars to glow and heat, observing neutral hydrogen signals, knowing the details of the interaction between galaxies, and calculating the clues of the development of the universe.
Another "main course" that we should look forward to is "observation pulsar". Pulsars are the final product of the evolution of massive stars. About 2000 pulsars have been observed in the Milky way, and FAST will be directed outside the Milky way.
With the completion of the main body of the pot, scientists will collect and collect the ingredients. In the face of the diverse world, they need to filter "impurities" and concentrate on their operations so that they can cook a whole pot of flowers.
FAST, I have a saying that I don't know what to say when I say it unreasonably.
Editor in responsibility: Yu Pengfei
Waonews is a news media from China, with hundreds of translations, rolling updates China News, hoping to get the likes of foreign netizens