Physics Lab: Optics - Reflection
Goal: To observe light reflected from a curved mirror surface
- curved metal surface
- ground glass
- graph paper
- Set up the laser, curved surface, and ground glass as shown.
- Put a piece of graph paper behind the ground glass so that you can mark positions on the paper from the curved surface.
- Mark the positions of your measurements on the surface with a wax crayon or other removable marker.
- Maintaining the same angle, or measuring the angle each time, move the laser around the curve and mark the reflected position of at least 10 observations.
- Take a second set of measurements, trying to hit the same points on the surface from a different distance and angle. Record the position of the reflected beam.
- Based on your data, predict the reflected position of at least two more observations, then make the observations.
- Record the laser position and reflection position, then determine the angle between them, and take half of that for the angle of incidence = angle of reflection.
- Describe your experimental setup, and report your data in tabular form; use diagrams if necessary to explain your calculations.
- How accurate were your predictions for the location of the two sample test spots.
- Explain how you could use ray tracing data from multiple observation points to map the surface of an object.
Post your report to the Lab thread at the Moodle.
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