Question

DULL An astronomer using a fluorite refractor lens (n=1.434) wishes to observe the hyan e hydrogen alpha emissions from a nebula. These emissions have a wavelength of 656.3nm. To maxim To maximize transmission of the light through the lens, a special optical coating having of 1.355 is put on the front surface of the lens. What minimum thickness of such a coating would maximize the transmission of the light in other words, it minimizes reflection)? Two plane mirrors are arranged as shown below. A beam of light strikes the first one at an a of 20° with respect to the horizontal. At what angle with respect to the horizontal does it le the second mirror? 20-55=35 90-55 - 70 200 180-75= 1050

Answer 1

90-55:35: i 180-105-20 70 70 - 180.75=105 Angie (0) = 3.5'+ 35' - 2012 Anglecol = 5oT with Horizent al