Ghost tea bags are suspended in the air. What are some ways to make objects float?

1. There is intermolecular attraction and repulsion between small molecules. Looking at macroscopic objects, can magnetic levitation technology make objects levitate? .

With the development of space industry, simulating the space suspension technology in microgravity environment has become an important means to carry out related high-tech research. At present, the suspension technologies mainly include electromagnetic levitation, optical levitation, acoustic levitation, airflow levitation, electrostatic levitation and particle beam levitation, among which electromagnetic levitation technology is relatively mature. Electromagnetic levitation technology is called EML technology. Its main principle is to use the eddy current generated by high-frequency electromagnetic field on the metal surface to realize the suspension of metal balls.

The maglev train made by using the principle of repulsion of the same name and attraction of different names is the most common example in life.

Second, using the lift generated when the helicopter propeller rotates, objects can also be suspended in the air.

Helicopter blades are about 2-3 meters long and generally consist of 5 blades. Ordinary aircraft take off by wings to generate lift, and helicopters rotate by propellers to stir the air to generate lift. When the helicopter takes off, the propeller turns faster and faster, and the lift generated is also increasing. When the lift is greater than the weight of the plane, the plane takes off. When the pilot adjusts the altitude in flight, he only needs to change the speed of the large propeller.

On the earth, nothing can rise to the sky without gravity, but once it is in a weightless environment (outer space or space station), this wish can be realized.

During the space teaching of Shenzhou-10, our astronauts showed us an impressive weightless scene. Wang Yaping picked up an astronaut's drinking water bag, opened the water stop clip, and gently squeezed the water bag. A water drop immediately formed at the mouth of the straw, and the water drop floated in mid-air. She opened her mouth and swallowed the water drops forward. She is still on the T-shaped bracket, tying a bright yellow steel ball with a string, pulling the ball to a certain position and releasing it. The ball didn't swing back and forth on the ground, but stopped in midair. She nudged the ball with her finger in the tangential direction and the ball began to turn.

The water drops here are stagnant in the air because of weightlessness. If they were human, the effect would be the same.

An object can only remain static when it is not subjected to force or balanced force, and suspension is one of them. We should believe in science and use science and technology to benefit mankind.

Relevant information and pictures are all from the Internet: through Baidu search.

Relevant reference sources are as follows:

/20 13-06/2 1/content _ 8034560 . htm