why are hard drive platters reflective?

They have to be polished to reduce air turbulence, and maintain a very critical flying height over the surface. How would you do this and have a non reflective surface?

Well, that took the fun out of the question! Wouldn't it be more entertaining getting into wavelength and electron orbital?

Did you ever see one explanation for why glass is transparent? The answer boiled down to, "there is no reason it shouldn't be". Huh?

:-)

But you can fly heads on a glass disk which is transparent.

The disk surface is nickel, cobalt and chromium.

Have you ever seen magnetic glass?

I'm tired of beating around the bush, so I tuned up the bush hog. Looks like poor little Ferdie was in the way when I fired it up on SED! ;-)

Glass disks are used for fly height analysis.

because they are very flat, and the coating is very thin.

Bye. Jasen

Glass disks are metalized to make them magnetic and used in new, high RPM hard drives.

My point was the reflective nature of disks is due to the surface materials, not the flatness.

Proof?