Paraboloid

A paraboloid is a three-dimensional shape that looks like a bowl or a satellite dish. It is formed by rotating a parabola, a U-shaped curve, around its axis or by extending a parabola into three dimensions. Paraboloids are important in engineering and physics because they focus light, sound, or other waves to a single point. For example, satellite dishes use a paraboloid shape to direct signals efficiently. Essentially, it's a smooth, curved surface that has unique reflective and focusing properties, making it useful in various technological applications.