Perlin Noise is a gradient noise function developed by Ken Perlin in the 1980s. It generates smooth, continuous random patterns that are often used in computer graphics and procedural generation. Unlike traditional random noise, Perlin Noise creates a more natural appearance, making it ideal for simulating textures like clouds, terrain, and waves. The algorithm works by interpolating between random gradient vectors at various points in space. This results in a coherent noise function that varies smoothly, allowing for the creation of complex and visually appealing patterns. Perlin Noise is widely used in video games, simulations, and visual effects.