Re: [ATM] Bronze reflectivity

[Sonya <sonya@ggms.com>]

Btw, I'm a bit partial to coatings which are already oxidized on the 
surface so that this ongoing reaction is not an issue... unless you were 
going to deploy it in a vacuum. Are you going to deploy it in a vacuum?


Anthony Stillman wrote:

>Bronze reflectivity
>
>I’m gathering together reflectivity data for stuff I
>have.  These polished surfaces will then form a set of
>standards to which I can compare the reflectivity of
>various formulations of bronze (speculum).
>
>The standards included overcoated evaporated aluminum
>on pyrex, polished pure nickel, polished pure silicon,
>and a small paper thin piece of polished pure
>platinum.
>
>Using just the aluminum standard and the microscopic
>spectral reflectometer I constructed from duct tape,
>cardboard tubing, and wooden dowels, I’ve collected
>some preliminary data
><http://www.atmlist.net/contrib/atmer-at-flash-dot-net/reflect.jpg>.
> The most meaningful information that can be garnered
>from it is a 5% drop in reflectivity over six months
>for “ideal” speculum. 
>
>Anthony
>
>
>
>aes
>Pronounced “ice”
>Latin for both bronze and money.
>
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>
>  
>

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