What is the difference between polarized and non-polarized light?

Polarized light consists of waves that oscillate in a specific direction, while non-polarized light has waves oscillating in multiple directions. Polarization can occur through reflection, refraction, or filtering, allowing certain orientations of light waves to be transmitted or absorbed. In contrast, non-polarized light, such as sunlight, contains waves vibrating in all possible orientations. This distinction is important in various applications, including Photography, sunglasses, and optical devices.