# Conceptual Physics Alive: Reflection and Refraction

Item # 99-0280

Arbor Scientific

99-0280

31760246702153

\$7.95
In Stock

Master teacher Paul Hewitt teaches concepts on Reflection and Refraction. Total internal reflection and light dispersion are also discussed.

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Conceptual Physics Alive: Reflection and Refraction includes a digital video and questions set with answers.

Observe Paul Hewitt teach in a classroom with real students, using engaging demonstrations and artwork. In this video, mirrored and diffuse reflection are compared. Refraction is demonstrated using a water tank. The concepts of total internal reflection and light dispersion are discussed, leading to a demonstration of properties of a rainbow. Segment length: 41 minutes

Reflection and Refraction Includes:

• Hewitt begins with the game 'Fermat's Principle of Least Time' (which is in the college edition of Conceptual Physics, but not in the high school version).
• The principle of reflection; the angle of incidence equals the angle of reflection.
• Diffuse reflection for rough surfaces.
• On the chalkboard, Hewitt draws a candle in front of a mirror and sample light rays to illustrate the law of reflection.
• Refraction is illustrated on the chalkboard by Fermat's principle of least time, and the case is given of a lifeguard wanting to save someone in distress in the water the path of shortest time is not necessarily a straight line.
• Refraction and changes in light speed when going from one medium to another.
• Demonstration of wheels rolled down an inclined plane that bend when they roll from a smooth surface to a rough surface.
• Chalkboard sketch of wheel action, and how light similarly bends in going from air to water.
• Demonstration of the refraction of "root beer" poured in a mug.
• Hewitt tells of seeing a bottle of Coke embedded in plastic where very little refraction occurred. This allowed a 'truer" view of the amount of Coke in the bottle.
• Demonstration (Hewitt's first!) in response to a student question. A tank of water is produced and the 'Coke bottle' phenomenon is nicely displayed.
• Demonstration of refraction of a laser beam in water.
• Hewitt suggests an experiment in the bathtub wherein a flashlight is tipped upward to reach the critical angle.
• Critical angle of light in water.
• Fiber optics, and the hair of polar bears.
• Rainbows and prisms.
• Demonstration of the rainbow's bow shape with a set of sticks that simulate light rays.
• Fisheye view of the sky.
• Nearsightedness in water.

Next-Time Question: What is the minimum size of a plane mirror on the wall to see your full-length image? What effect does distance have on your answer? (SEE RESOURCES TAB FOR A SAMPLE OF QUESTIONS AND CLICK HERE FOR MORE)

Please note: The digital content will be sent to the email provided during checkout, once your order has been processed. Order will be processed no later than the next business day.