[ATM] Bronze reflectivity

[Anthony Stillman <atmer@flash.net>]

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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