What is the principle of neutron mirror?

neutron mirror, a lens for preventing and controlling myopia in adolescents. Using the principle of "prism and convex lens", we can change the near view into the far view. There are two light areas, the glazing area is an auxiliary light area to help myopia patients see the distance clearly; The lower light area is the physiotherapy light area, and the combination of prism and convex lens is adopted to play the role of "eliminating false myopia and controlling true myopia".

a Neutron is one of the nucleons that make up the nucleus. Neutron is an indispensable component of the chemical elements that make up the nucleus (note: atoms do not contain neutrons). Although the chemical properties of atoms are determined by the number of protons in the nucleus, without neutrons, due to the repulsive force between positively charged protons (protons are positively charged and neutrons are uncharged), it is impossible to form other elements except hydrogen with only one proton.