suurennin

Suurennin is a Finnish word that translates to magnifier or magnifying glass in English. It refers to a convex lens or a system of lenses that is used to produce a magnified image of an object. Magnifiers are typically handheld devices, though they can also be incorporated into other tools or equipment.

The basic principle behind a magnifier is that when an object is placed within its focal length, the lens converges parallel light rays from the object to create a virtual, erect, and magnified image that appears further away from the observer. This allows the eye to perceive finer details that would otherwise be invisible or difficult to discern.

Magnifiers come in various forms and strengths, denoted by their magnification power. A higher magnification power means the lens can enlarge an object more significantly. They are commonly used for tasks requiring close-up inspection, such as reading small print, examining stamps or coins, performing intricate crafts, or in scientific and technical applications. Different types of magnifiers include simple handheld lenses, illuminated magnifiers with built-in lights, and more complex optical instruments like loupes and microscopes, which are essentially advanced forms of magnifiers. The choice of magnifier depends on the specific task and the required level of detail.