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Explain Lucca's observation that violet light refracts the most while red light refracts the least.Refer to the properties of light in your response.

Question

Explain Lucca's observation that violet light refracts the most while red light refracts the least.

Refer to the properties of light in your response.

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Solution

Lucca's observation is based on the principle of light refraction and the properties of different colors of light.

  1. Refraction is the bending of light as it passes from one medium to another. This happens because light travels at different speeds in different mediums.

  2. The degree of refraction depends on the wavelength of the light. Light is made up of a spectrum of colors, each with a different wavelength. Red light has the longest wavelength and violet light has the shortest.

  3. When light passes from one medium to another, such as from air into glass, each color of light is refracted by a different amount. This is known as dispersion.

  4. Violet light, with its shorter wavelength, is slowed down more and thus refracted more than red light, which has a longer wavelength. This is why violet light bends the most and red light bends the least.

  5. This phenomenon is also why we see rainbows. When sunlight (which contains all colors of light) passes through raindrops, the light is refracted and dispersed, separating it into its different colors.

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