![]() Using those lines as guides, cut two 3 inch slits on both sides of the cereal box.From the corner of the box where the flaps were cut, draw a 3 inch line towards the center of the box on both sides.Cut along the guideline, then unfold and cut off the flaps. Using the same straight edge, draw a guideline across the width of the box.On the top of the box, use a straight edge to measure and mark off 1.5 inches along its length.For this, you’ll need an old CD, a cereal box, a pair of scissors, aluminum foil, a 60 degree angle template, and tape. An optical spectrometer is a scientific device used to split light into an array of its constituent colors. If you move the screen back toward the lens, the colors will recombine to white, and then separate back into the constituent colors.Īnother fun way to explore the visible light spectrum would be to make a simple spectrometer. At this point, if you keep moving the screen away from the lens, the white light will separate back into the different colors but in the reverse order. If you place a lens right in front of the screen and slowly move the screen away from the lens, the colors will combine back to a single white light. You can take this experiment a bit further. This property of light is what allows us to see the individual colors when the light exits the prism. As we know, each color of the visible spectrum has a different wavelength and, therefore, is bent to a different degree as it passes through the prism. On the white screen, you should see a rainbow. Position the white screen to receive the light as it exits the prism. On a flat surface, set up set up the prism and direct the white light through it. With this experiment, Newton discovered that white light is a combination of all colors rather than a single color in itself.įirst, you’ll need a prism, a source of white light, and a white screen. A great place to start is Newton’s prism experiment. There are lots of interesting and easy ways for you to explore the visible light spectrum. The range of colors the eyes interprets from electromagnetic radiation of different wavelengths is commonly used to depict the visible light spectrum.Įxperiments for Exploring the Visible Light Spectrum Incandescence is the phenomena when a body gets so hot that it begins to glow. Our eyes interpret this light as the colors associated with shorter wavelengths, such as blue and violet.Ĭonversely, energy radiations with longer wavelengths are interpreted as the colors closer to red and orange. ![]() The hotter the black body gets, the greater the energy it radiates and the shorter the wavelength of that radiation. Imagine a perfect black body, which absorbs and radiates all the energy that reaches it. The wavelength of the energy being radiated determines the color we perceive the source to be. The color of a light is determined by the energy being radiated by the light’s source. Light, Energy, and Color Temperature of Visible Light Diffraction is the process by which a wave spreads out as a result of passing through a narrow opening.Refraction is the change in direction a wave as a result of traveling from one medium to another.Reflection is the process by which a light wave comes into contact with a surface and is thrown back towards its source.Like any other form of electromagnetic radiation, visible light is subject to reflection, refraction, and diffraction. Properties of the Spectrum of Visible Light To be clear, color is the eye’s perception of different wavelengths of electromagnetic light. From longest to shortest wavelength, they are: red, orange, yellow, green, blue, indigo, and violet. Visible light travels at a speed of 300,000 km per second and can be broken down into seven colors. Sunlight, which is our primary source of visible light, and which is often referred to as white light, is actually the presence of all colors. The visible light spectrum is often depicted as a scale of colors with different wavelengths. The light in this section have wavelengths ranging from 380 nm and 760 nm. The visible light spectrum is the section of the electromagnetic spectrum which is visible to the human eye. The electromagnetic spectrum can be considered in terms of seven types of electromagnetic radiation, all corresponding to different wavelengths and frequencies: radio, microwave, infrared, visible light, ultraviolet, x-rays, and gamma rays. ![]()
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