This has the effect of bending the path of light as

  • No School
  • AA 1
  • jackievela713
  • 4

This preview shows page 1 - 3 out of 4 pages.

what it is in a vacuum. This has the effect of bending the path of light as the light enters a medium and slows down. The more the light slows down, the more it bends towards the normal line. Light will
Image of page 1

Subscribe to view the full document.

also refract or bend when coming out of a medium and speed up. However, in this case it would refract or bend away from the normal line. In some materials, different wavelengths (or colors) of light travel at different speeds. This leads to the slower wavelengths of light being bent more than the faster ones due to refraction . The net effect is a spreading of the spectrum. We call this effect dispersion . To enhance dispersion , the side of glass where the light enters is placed at an angle to the side it exits. When the glass is cut in a triangle to enhance dispersion, we call it a prism. Waves A wave is a disturbance that moves energy from one place to another. There are two types of waves: transverse waves and longitudinal waves . In a transverse wave the field of the wave moves back and forth perpendicular to the direction of the wave. For example, when one end of a string is shaken, a transverse wave is produced. In a longitudinal wave the field of the wave moves back and forth in the same direction as the wave. For example, when one end of a spring is pulled, a longitudinal wave is produced. The wavelength ( 𝝀𝝀 - greek letter lambda) of a wave is the distance between two adjacent wave crests. The frequency of a wave is the number of wave crests that pass by a given point each second. The frequency ( 𝑓𝑓 ) and wavelength ( 𝜆𝜆 ) are related to the speed of the wave ( 𝑣𝑣 ) : 𝑣𝑣 = 𝜆𝜆𝑓𝑓 Light Light is an electromagnetic wave . This type of wave consists of an electric and a magnetic field that move simultaneously through space. The electric and magnetic fields are perpendicular to each other and to the direction the wave is traveling, which makes light a transverse wave.
Image of page 2
Image of page 3
  • Fall '19
  • Light, Behavior of light

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

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes