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  • Work
    Learning Object
    Hoeling, Barbara
    This interactive animation allows you to explore Snell's law by shining a laser from air into a different medium, which can be either water or glass. Move the laser to change the angle of incidence, and observe how the refracted beam changes direction . . .
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    Learning Object
    Hoeling, Barbara
    Not all mirrors are flat, of course. Now we want to consider two special cases of mirrors, both of which are pieces of a shiny sphere. Convex spherical mirrors are the outside of a reflecting sphere (or a part of it), and concave spherical mirrors are . . .
  • Work
    Learning Object
    Hoeling, Barbara
    This interactive animation demonstrates how the focal length of a lens changes with its thickness. Like in the previous slide, the lens is shown from the side, and light rays are coming in from the left. Click on the arrows on the lens and pull to mak . . .
  • Work
    Learning Object
    Hoeling, Barbara
    This interactive animation is very similar to the one with the convex lens you have used before. Here, too, you can click on the object and drag it to different positions, so you can observe what happens to the image. But now, you are able to move the . . .
  • Work
    Learning Object
    Hoeling, Barbara
    We have seen in the last video that a convex lens indeed makes an image of our object, the little lit arrow. But how exactly is this image formed? This animation shows you that light rays are going off in all directions from every point of the object. . . .
  • Work
    Learning Object
    Hoeling, Barbara
    In this interactive animation, you can explore how the lens of the eye adjusts its thickness. This allows you to see an object in focus as it is moved to different distances from the lens. Drag the object to another position and observe how the lens c . . .
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    Learning Object
    Selco, Jodye I.
    This is a simulation for chemical kinetics and equilibrium including a simulation modeling the dependence of a one-way reaction as an introduction, a simulation showing chemical kinetics conversions, and a simulation showing chemical equilibrium conve . . .
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    Learning Object
    Hoeling, Barbara
    This cartoon shows you a marching band, walking from an area of solid ground where the musicians can walk fast, into a region of muddy ground where they have to walk more slowly. Each row of musicians carries a long pole. Watch what happens when the f . . .
  • Work
    Learning Object
    Hoeling, Barbara
    Here you can see what is called a principal ray diagram. We have constructed the image of the candle from the three principal rays, as we explained before. This interactive animation allows you now to move the object relative to the lens, and to obser . . .
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    Learning Object
    Stevens, Christy
    This information literacy tutorial helps students to understand the difference between scholarly vs. popular resources, what scholarly books and articles are, and how to effectively evaluate sources. To play this file, download the ZIP archive, decomp . . .