tiny-tim said:hi jegues!
it's not 30°, it's 60°
jegues said:
… the angles of incidence and refraction are always from the normal tiny-tim said:hi jegues!
nooo
Total internal reflection is a phenomenon that occurs when a light ray traveling through a denser medium reaches the boundary with a less dense medium at an angle greater than the critical angle. Instead of refracting into the less dense medium, the light ray is completely reflected back into the denser medium.
Total internal reflection is caused by the difference in the refractive indices of two media. When light travels from a denser medium to a less dense medium, it slows down and bends away from the normal line. If the angle of incidence is greater than the critical angle, the light will be reflected back into the denser medium.
The critical angle is the angle of incidence at which total internal reflection occurs. It is determined by the refractive indices of the two media and can be calculated using Snell's law.
Total internal reflection is used in various applications, including fiber optics, prism binoculars, and reflective coatings for mirrors. It is also used in diamond cutting to create the brilliance and sparkle of diamonds.
No, total internal reflection can only occur when light travels from a denser medium to a less dense medium. It cannot occur when light travels from a less dense medium to a denser medium, as the angle of incidence will always be less than the critical angle.
