\"Rare Earth\" is a group of 17 elements with similar chemical properties-tech products. Despite their names, most are rich in nature, but extraction is dangerous. Most of the \"rare earth\" elements are useful in several different areas and in the areas listed below. This is used to make powerful magnets used in speakers and computer hard drives, making them smaller and more efficient. In green technologies such as making wind turbines and hybrid cars, magnets containing nd are also used. Both the camera and the telescope lens use this element. Compounds containing rare earth elements are widely used in carbon lighting applications such as studio lighting and cinema projection. Used for catalytic converters in cars, enabling them to operate at high temperatures and play a vital role in the chemical reactions in the converters. In the process of refining crude oil, la and ce were also used. Used to manufacture solid metal for aircraft engines. Ase is also a component of special glass for the manufacture of goggles to protect welders and glass manufacturers. Used in X- X-ray and MRI scanning systems, as well as television screens. It is also studying its possible use in developing more efficient refrigeration systems. It is important when making TVs, computer screens and other devices with visual displays because they are used to make materials that emit different colors. The EU is also used in the manufacture of nuclear reactor control rods.