Hòw can we calculate the physical property of mirror
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The mirror equation. Drawing a ray diagram is a great way to get a rough idea of how big the image of an object is, and where the image is located. We can also ...
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Vejing
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Surfaces have different characteristics with respect to their interaction with light. Some surfaces are “shiny” and reflect most of the light incident on the surface. Others are dull and reflect little light at all. Surfaces have “color” — the color comes from the light incident on the surface, which may reflect some spectral components, and absorb others. A red painted cube reflects red light, but absorbs green and blue light. If illuminated by pure green or blue light, the cube would appear black. Some surfaces, like a CRT screen, for example, emit their own light, in varying colors and intensities. Characteristics like “roughness” are also important in determining the interaction between light and a surface. Also, some materials can be transparent and this transparency may be wavelength dependent (a red plastic screen transmits only red light, it absorbs the rest).
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Vejing
Ur answer is
Surfaces have different characteristics with respect to their interaction with light. Some surfaces are “shiny” and reflect most of the light incident on the surface. Others are dull and reflect little light at all. Surfaces have “color” — the color comes from the light incident on the surface, which may reflect some spectral components, and absorb others. A red painted cube reflects red light, but absorbs green and blue light. If illuminated by pure green or blue light, the cube would appear black. Some surfaces, like a CRT screen, for example, emit their own light, in varying colors and intensities. Characteristics like “roughness” are also important in determining the interaction between light and a surface. Also, some materials can be transparent and this transparency may be wavelength dependent (a red plastic screen transmits only red light, it absorbs the rest).
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