A magnifier is an optical device that makes objects appear larger than they are. It typically consists of a convex lens, which bends light rays to enlarge the image of an object. Magnifiers are commonly used in various fields, including science, art, and everyday tasks, to help people see fine details more clearly. Magnifiers come in different forms, such as handheld lenses, magnifying glasses, and digital magnifiers. They are useful for activities like reading small print, examining intricate designs, or studying small specimens in fields like biology and geology. Magnifiers enhance visual clarity and assist those with visual impairments.