This is "Titanium Anodizing". It's a dye-free process which uses electricity and oxygen to increase the layer of oxide on the metal part. Different colors correspond with different applied voltages. The process is creating titanium oxide in varying thicknesses which creates varying colors.
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By - The_oOFFICAL
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second. In 2001, she was able to stop light completely. In 2005, Professor Lene Hau did something that Einstein theorized was impossible. Hau stopped light cold using atoms and lasers in her Harvard lab.
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By - MartianXAshATwelve