A magnifying glass, also known as a hand lens, is an optical instrument that makes small objects appear larger. It uses a special kind of lens that is spherical on both sides. The lens is called a bi-convex lens or simply convex lens. By using refraction, the convex lens makes the image seem closer than… Continue reading What Kind of Lens is Used in a Magnifying Glass?
A magnifying glass isn’t always used just for magnification. One can simply start fire with a magnifying glass because of its unique properties which have long been known. It takes me back to the days of getting in big trouble in childhood for inadvertently igniting important papers. Starting a fire with nothing but a lens… Continue reading How To Start a Fire With a Magnifying Glass?
Magnifying glasses are used to enlarge any object without distortion. But how does it work? Luckily, the working principle of this popular optical instrument is not that complex to understand. The convex lens in the magnifying glass uses the principle of refraction to magnify. The “optical lens” bends the light rays entering its surface at… Continue reading How Does a Magnifying Glass Work?