As part of the 8 planet collection, each material of each from will be defined by the planets albedo, relating the the materials own albedo.
I have had to scale some of the forms a bit differently depending on what material they are going to be made out of due to materials shrinkage, most notable in porcelain with a shinkage of 15%. Aluminium and Bronz also have a shrinkage of 2-3% and Terracotta and White Earthenware slip have a shrinkage of 9-10% which needs accounting for.
I needed to know the reflectivity of each materiel to match it to the planet. Below is my initial estimations for the reflectivity of each material along with the material shrinkage-
|Planet Name||Bond Albedo||Material||Material Shrinkage|
|Saturn||0.342||Lightly patinated Bronze||2%|
With this in mind I went about doing some material testing to establish what the materials might look light together and to try and establish it reflectivity. I first gathered the material I was going to test, polishing some bronze and brushing some aluminium. Below are some of the initial material samples-
I then took them into a dark room and using a laser, shone a point of light onto each surface measuring how much light was bounced back onto a piece of white card. I decided I didn’t like how the patinated Bronze fitted in with eh rest of the materials. It had quite a high reflectivity due the metallic surface, yet to the eye it looks very dark and stuck out like a sore thumb! Therefore I decided to add in a new material; concrete. I love the minimalist aesthetic of concrete, along with its surface finish. I i the least reflective of all the materials. Below are the materials in the final order of reflectivity-
And the materials in order of the planets as they will be in the final exhibition-