The Physics Review Letter, published on the 17th, published an important achievement: Washington State University successfully created a negative-quality superfluid in the laboratory. When it is pushed, it does not move forward like a normal object. Accelerate but move backwards. This research provides a new experimental tool for exploring the universe phenomena such as neutron stars, black holes and dark matter. Theoretical studies have confirmed that, like positive and negative charge, substances also have negative mass. But what people are all familiar with is a positive mass object, which is in line with Newton's second law of motion, that is, the force is equal to the mass of the object multiplied by the acceleration, so when the object is pushed, it will accelerate along the direction of force. The negative mass object is exactly the opposite. When thrust is given, it does not advance backwards and accelerates backwards. "It's like encountering an invisible wall," explains physicist Michael Forbes who is involved in the study. Forbes and colleagues created this unique negative-mass fluid by cooling helium atoms. They reduced the temperature of the helium atom to near absolute zero, forming a Bose-Einstein condensate, which can move slowly following the principles of quantum mechanics like light waves, and the condensed particles finally become superfluous superfluous fluids. They used the first set of lasers to allow the high-energy particles to evaporate and escape, and the particles moved more and more slowly to achieve refrigeration. Then the helium atoms are trapped in a bowl-shaped field with a diameter of less than 100 microns. Another group of lasers kicks the atoms back and forth, changing the direction of the spin, and eventually rushes out of the magnetic field, showing a negative mass effect. Forbes said that the new technology for the first time to achieve precise control of the characteristics of negative mass substances, to avoid the other shortcomings common in the study of negative mass, to provide an important experimental tool for the study of the unresolved basic physical phenomena in the universe. Desk Lamp,Table Lamps,Desk Lighting,LED Desk Lamp,Reading Desk Lamp Yuyao Flylit Appliance Co.,Ltd , https://www.nbyyflylit.com