The refraction indices of materials vary slightly with temperature and with the wavelength of the light going through the material. The index of refraction of water at 70°C for a helium neon laser is 1.32 = (use the fraction–no calculators). If the laser is shone through a right triangular prism of water (held by in place by negligibly thin walls) as drawn, 8. What is the critical value of the angle of incidence, e;, such that beyond this angle, the laser is not transmitted through the far side as indicated? 9. Does total internal reflection occur for incident angles greater than or less than 0; ? of

The refraction indices of materials vary slightly with temperature and with the wavelength of the light going through the material. The index of refraction of water at 70°C for a helium neon laser is 1.32 = (use the fraction–no calculators). If the laser is shone through a right triangular prism of water (held by in place by negligibly thin walls) as drawn, 8. What is the critical value of the angle of incidence, e;, such that beyond this angle, the laser is not transmitted through the far side as indicated? 9. Does total internal reflection occur for incident angles greater than or less than 0; ? of