Total Internal Reflection #physics #experiment #science #education #ytshorts #trending #subscribe

Total internal reflection (TIR) is the phenomenon where light, traveling from a denser to a rarer medium, is reflected back into the denser medium instead of refracting into the rarer medium, provided the angle of incidence exceeds a specific angle called the critical angle. Here's a more detailed explanation: Conditions for TIR: Light must travel from a medium with a higher refractive index (denser) to a medium with a lower refractive index (rarer). The angle of incidence (the angle at which the light ray strikes the boundary) must be greater than the critical angle. Critical Angle: The critical angle is the specific angle of incidence at which the angle of refraction is 90 degrees. What happens during TIR: When the angle of incidence is greater than the critical angle, the light ray is entirely reflected back into the denser medium, rather than being refracted into the rarer medium. Examples of TIR: Optical fibers: TIR is the principle behind how optical fibers transmit light. Diamonds sparkling: The high refractive index of diamonds and the low critical angle contribute to their sparkle. Mirages: TIR can contribute to the formation of mirages. Prisms in binoculars and periscopes: TIR is used in these devices to invert images. #science #experiements #scienceexperiment