Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will reduce in speed as it travels through, causing it to change direction.

Ray of Light and Snowflake were the mascots of the Sochi 2014 Paralympic Winter Games. They are space travellers who came to Earth from two different planets. Ray of Light came from a planet that was ...

The phrase “Crepuscular Rays” actually refers to both the light and dark bands you see in the sky when sunlight is partially blocked by clouds overhead or on the horizon. For those light bands ...