Chapter 17 :LIGHT

Lenses A hand lens magnifies objects, or makes them look larger. Most hand lenses contain one glass or plastic lens. A lens is a curved transparent object that bends light. The shape of the curve affects how the light bends

Lenses Concave lens: It is thicker at the edge than it is at the center. It spreads light waves apart. Example: the view finder of a camera has a concave lens that makes the objects look smaller. That way you can look in the view finder & see what the whole picture will look like. Convex lens: It is thicker at the center than it is at the edges. It bends light waves to make them come together. A convex lens can be used as a magnifier or to make an image on a screen. The lens of a camera is a convex lens, it brings light waves together on a film to produce an image.