ReflectionAndRefraction_1

ReflectionAndRefraction_1 - PHY124 REFRACTION Exp 7...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
PHY124 REFRACTION Exp. 7 Abstract Light experiences a process called “Refraction” whenever it crosses a boundary between regions with differing indices of refraction, n . While doing so, the light bends in accordance with Snell’s Law: n 1 sin ( θ 1 ) = n 2 sin ( θ 2 ) (1) where the subscripts 1 & 2 refer to each of the two media. The two angles θ 1 and θ 2 are measured between the light ray and the “normal” to the surface on which the light impinges. 1 Knowledge and Understanding Goals You should have a “hands-on” knowledge of all the following items at the end of the lab period: The use of a protractor to measure angles. Which angles are the so-called “angle of incidence” and “angle of refraction”. How to recognize from an unlabeled ray diagram which of two substances has the larger n ( HINT: Where n is large, θ is small.) What is the condition for “Total Internal Reflection”. How to measure the critical angle for Total Internal Reflection. When the quantities in the lens equations ( o , i , f , m ) are positive and when they are negative. When an image is real or virtual. How to measure magnification. 2 Equipment 1 “Ray Tracing” Table 1 Triangular Prism 1 Protractor 1 Clear Ruler
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
PHY124 REFRACTION Exp. 7 The “Ray Tracing” table (shown in Figure 1) is a clever device that allows one to observe and trace the path of light as it goes through a variety of optical elements. Light diverges from the bright lamp and hits the slits. Since the light is continually diverging, some of it hits the paper leaving visible lines that can be traced. Figure 1: The “Ray Tracing” table allows you to visually see the path of the light through the prism. We will use the light table for three experiments: Dispersion (dependence of n on λ ), Snell’s Law, and Total Internal Reflection.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern