Monthly Archives: October 2006

  • Shadows in Science and Art

    Posted on October 1, 2006 by Chris Chiaverina

    Shadows are ubiquitous, but often go unnoticed. Shadows are important historically, for they provided early evidence that light travels in straight lines. Humans constantly, but unconsciously, use shadows to judge the shape of objects in their environment. Because shadows reveal much about an object’s extension in space, they are often used to heighten the illusion of depth in a painting.

    This post was posted in CoolStuff Newsletters, Light & Color, Illusions and was tagged with light, shadows, science and art, point source, shadow puppets

  • Atmospheric Optics: She comes in colors...

    Posted on October 1, 2006 by Chris Chiaverina

    The sky offers a wide variety of stunning optical effects. A source of inspiration for poets and songwriters alike, these atmospheric phenomena include red sunsets, rainbows, mirages, halos, glories, and coronas. These effects are the result of the interaction of light from the sun or moon with the gases in the atmosphere, clouds, ice crystals, smoke, dust and other airborne particulates. Some of these phenomena can be seen almost every day; others occur less frequently. In this issue of CoolStuff we will examine examples of atmospheric optical phenomena and how they may be demonstrated in the classroom.

    This post was posted in CoolStuff Newsletters, Light & Color, Optics, Illusions and was tagged with Atmospheric Optics, Rainbow, spectrum, Blue Sky

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