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There are 13 videos in this category and 0 videos in 0 subcategories.
Category Videos
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Not Right For WatchKnowLearn
Ages: 7 - 16
1473 Views:
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Light bends through a lens. Bill shows us why. We call it the science of "optics." (02:02)
November 8, 2014 at 03:14 PM
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Not Right For WatchKnowLearn
Ages: 13 - 18
1187 Views:
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Practice questions with explanations from the extended syllabus for IGCSE. Questions would make a great start for A-level physics students. Author spends a lot of time focusing on how to rearrange equations and interpret questions. (16.58)
June 9, 2013 at 05:48 AM
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Not Right For WatchKnowLearn
Ages: 13 - 18
646 Views:
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This is an excellent tutorial on Snell's law, complete with worked examples. The instructor provides excellent explanations while using a whiteboard to reinforce his teaching points. This tutorial clearly explains the mathematics required for this ...topic. (16:57)
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May 31, 2013 at 12:16 AM
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Not Right For WatchKnowLearn
Ages: 13 - 18
482 Views:
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Following on from my video on refraction and Snell's law, I look at the special case of critical angle. Some uses of total internal reflection are looked as well as example calculations. (5:03)
June 9, 2013 at 05:47 AM
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Not Right For WatchKnowLearn
Ages: 9 - 18
1409 Views:
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In this interactive activity featuring videos adapted from the Rutgers PAER Group, observe the refraction of light as it passes through transparent objects. In the first example, when a convex lens is placed in the path of parallel beams of light, th...e beams converge after passing though the lens. In the second example, when a concave lens is placed in the path of parallel beams of light, the beams diverge after passing through the lens. In the third example, when a rectangular piece of glass is placed in the path of a beam of light, the light bends at the boundary both into and out of the glass.
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May 20, 2012 at 03:09 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
734 Views:
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In this interactive simulation adapted from the University of Colorado's Physics Education Technology project, learn how lenses refract light to form images. Experiment with different ray display options (marginal rays or many rays) to investigate ho...w a convex lens refracts light. Adjust the curvature, refractive index, and diameter of the lens to see how the focal length changes and how the resulting image is affected. Manipulate the placement of the object to observe its relationship to image size and location.
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May 6, 2012 at 04:22 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
671 Views:
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This video explains how light travels through different materials to our eyes—or refraction. Refraction is the slowing down or bending of light as it moves through different transparent substances. This video explains the index of refraction, which... is the speed of light in a vacuum divided by the speed of light in material. It provides a demonstration that shows how to create a mirage using a tank, fresh water, salt water, and a laser. (4:52)
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May 27, 2012 at 12:07 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
2174 Views:
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With just a few ingredients, you will have the power to make a glass vanish right before your eyes! Okay, maybe it's not magic, but a really cool science experiment about index of refraction making an object appear invisible. Steve Spangler does a gr...eat job of explaining the science behind this vanishing trick. (03:10)
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March 27, 2011 at 12:19 AM
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Not Right For WatchKnowLearn
Ages: 7 - 14
1642 Views:
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In this video they discuss the history of refraction and do some interesting experiments. It also discusses index of refraction, Snell's Law, displacement, and shows the bending of light. Video is good quality and good for all students as review or i...nitial learning of the concept. The video includes closed captioning. Run time 10:03.
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July 31, 2009 at 05:16 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
3499 Views:
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This is a clip from the Blinding you with Science video series featuring Dr. Loopy. In this clip Charlesetta sings about light refraction. The educational lyrics are sung to the tune of Somewhere Over the Rainbow. Run time 0:59.
July 27, 2009 at 12:32 PM
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