A thin beam of white light is directed at a flat sheet of silicate flint glass at an angle of 20.0? to the surface of the sheet. Due to dispersion in the glass, the beam is spread out as shown in a spectrum in Fig. 33.58. The refractive index of silicate flint glass versus wavelength is graphed in Fig. 33.18.(a) The rays a and b shown in Fig. 33.58 correspond to the extremes of the visible spectrum. Which corresponds to red and which to violet? Explain your reasoning.(b) For what thickness d of the glass sheet will the spectrum he 1.0 mm wide, as shown (see Problem33.58)?

Transcribed Image Text:

20.0 Vacuum Silicate flint glass d Vacuum 1.0 mm-