151K views · 1.2K reactions | Refraction bends light when it passes through water, glass, or air. This bending changes the way you see objects. If light does not reach your eyes from an object, the object can appear invisible. You see this effect when a straw looks broken in water or when glass edges seem to vanish. Refraction is a change in speed of light between two mediums, and that shift changes the path of vision. | Fadhel Mahdi | Facebook