What's the latest layout of Buoyancy Cinema? & ltpre & gt I think the IMAX three-dimensional giant screen theater is quite good and comfortable to watch. In fact, the effect of 4D cinema is similar to that of giant screen cinema, except that the wind is strong and the water is sprayed. My suggestion is that if you want to see the giant screen, you don't have to watch 4D, because it's all the same, just choose one. I haven't seen the space cinema, but it seems that not many people watched it when I went there that day. . . .

What are the applications of buoyancy in daily life?

Ships have contributed to the change of human life and led to the interdependence of all countries in the world, which human beings never dreamed of before. Today, modern ships, including passenger ships, cargo ships and oil tankers, are engaged in various global commercial shipping related to human destiny.

2. Submarine

There are many kinds and shapes of submarines, ranging from fully automatic or small civilian diving detectors operated by one or two people for several hours to Russian typhoon-class nuclear submarines that can carry hundreds of people and snorkel continuously for 3-6 months. According to the volume, it can be divided into large (mainly military), medium or small (pocket submarines, submersibles) and underwater automatic mechanical devices.

Step 3 balloon

As a toy, balloon was once called "foreign eggplant". There is a small bamboo whistle at the opening of the balloon. When the balloon is filled with air, the exit will make a loud noise when it opens.

Balloons can also be used as decorations and transportation. If the balloon is big enough, the gas inside is lighter than the air of the same volume, and the buoyancy generated exceeds the weight of the airbag and attached objects (such as hanging baskets and hot air balloons), the balloon can rise.

4. airship

The airbag of the hull is filled with buoyancy gas (hydrogen or helium) whose density is lower than that of air, so as to generate buoyancy and lift the airship off. Pods are used for people to ride and load goods.

The tail surface is used to control and maintain the stability of heading and pitching. Large civil airships can also be used for transportation, entertainment, disaster relief, film and television shooting, scientific experiments and so on. For example, when natural disasters occur, when communication is interrupted, the aerostat can be launched quickly, and the communication transponder can be carried by the aerostat, so that the mobile communication recovery of the whole disaster area can be completed in a very short time.

5. Densitometer

Measure the blackening degree of the photosensitive material after exposure and development, that is, blackening in plate making, silver bromide exposure on the photosensitive material, and reduction to metallic silver after development to form certain opacity. Black, high density; Low blackness and low density. Instruments with filters can also measure the color density of color manuscripts. Its measuring principle is similar to the above basic principle.

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