Physics - Optics - Refraction - Laws of refraction (Snell's law) - Refraction Illusions

Show a scene with 6 refraction examples to click on: a straw in water appearing bent, a swimming pool looking shallower than it is, a fish underwater appearing at a wrong position, a pencil in a glass of water looking broken, a coin becoming visible when water is added to a bowl, a mirage on a hot r