![]() When you pass this light through a dispersive medium like a prism, all of the different wavelengths respond slightly differently. ![]() The bluer wavelengths have more energy, and so their electric and magnetic fields are stronger than the redder wavelength light. In a vacuum, all wavelengths travel at the same speed: frequency multiplied by wavelength equals the speed of light. Longer wavelengths, like red light, possess smaller frequencies, while shorter wavelengths, like blue light, possess larger frequencies. White light - like sunlight - is made up of light of a continuous, wide variety of wavelengths. One spectacular demonstration of this is the refraction of light as it passes through a prism. ![]() nature of light is both consistent with and a deeper explanation of the fact that white light can be broken up into differing colors. Schematic animation of a continuous beam of light being dispersed by a prism. ![]()
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