Quote:
Originally posted by bigben2k
Nice work N8! So are you writing up an article?
There must be some kind of discoloration in your picture: the mirror finish doesn't have a copper color, in fact it looks like the original metal!
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Two reasons:
1. I focused on the reflected image, the digital camera I used can be put within a couple mm of the object, and focusing through the depth of the photo gets harder as you get that close.
2. A really good mirror finish is 'almost' colorless due to the reflection of light off the surface - the light reflects the images, not the surface characteristics of the metal.
Here is a copper cold plate with a 0.02 micron finish reflecting the image of the computer monitor behind it. You can see the copper coloring fairly easily on the cut (non-polished edge), but the surface is mostly reflecting the mirror image instead of the metal color of the surface.
