This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Phys 375 HW 4 Fall 2010 Due 18 October, 2010 1. Consider the disturbance given by the expression ) sin( 2 / cos ) cos( ) , ( kz E t j t i t z E , where i and j are unit vectors in the x- and y-directions. What kind of wave is it? Draw a sketch showing its main features. Solution: First, since the z-dependence is alone inside the sine function we see that this is a standing wave. Then we notice that light is equal split between x and y , with a 2 / phase shift, implying that the light is circularly polarized. 2. Substances such as sugar, Karo syrup, and insulin are optically active; they rotate the plane of polarization in proportion to both the path length and the concentration of the solution. A glass vessel is placed between two perfect crossed linear polarizers, and 50% of the natural light incident on the first polarizer is transmitted through the second polarizer. By how much did the sugar solution in the cell rotate the light that passed by the first polarizer? the cell rotate the light that passed by the first polarizer?...
View Full Document
- Spring '11