A laser beam is a strong, thin, monochromatic, directional ray of electromagnetic energy or radiation inside the visible light spectrum. A laser machine energizes the particles in a laser path, causing movement of the el... More » Science Colors

Examples of electromagnetic energy include gamma rays, X-rays, ultraviolet radiation, visible light and infrared radiation, as well as microwaves and radio waves. Electromagnetic energy is any self-propagating energy tha... More » Science Physics Electricity

Holograms capture three-dimensional images by recording the interference patterns of a laser beam as it bounces off an object, according to HowStuffWorks. A holographic camera sends out two beams of light: one that strik... More » Science Colors
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Color perception is the mechanism by which some animals translate the properties of visible light into distinctive perceptions that inform them about the surrounding world. Visible light, usually from the sun, contains l... More » Science Colors

The Kelvin color scale is a chart that shows varying colors of visible light caused by differences in temperatures. Colors range from a warm hue to a blue tone, depending on the color temperature. More » Science Colors

A science project that explains the blue color of the sky at certain times of the day can be done by projecting a beam of light from a flashlight or a projector through a transparent container, like a large beaker or a j... More » Science Colors

A rainbow is caused by the sun hitting water droplets in the atmosphere and reflecting the light so that people see a spectrum of colors. Rainbows are bowed in the center due to the fact that rainbows result from a group... More » Science Colors