Why do metals have colored reflections

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Why do metals have colored specular reflections
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#metalness #metallic #coloredmetals #metalreflections

We all know that the metals color that we see is all from the speculars and metals reflect the surrounding envrionment complately on their surface. Why this happens? knowing some physics helps us make it in 3d better

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Something interesting about metal colors that I hadn't thought about until I learned it in a graphics class is that metals shimmer in their own color. Most other glossy materials only shimmer in white. For gray metals it doesn't really matter, but it makes a big difference between gold and orange yellow.
(Edit: I incorrectly said all instead of most other materials.)

elinhulldin