FAH483H1 Lecture Notes - Lecture 2: Color Vision, Logarithmic Scale, Sulfite
Document Summary
Organic materials of processed or altered to create cultural artifacts. All materials change in chemical and physical properties over time. Smelting to achieve a material that can be worked with corrosion (: a greenish sulphite metal trying to convert back to metal ore) Organic materials also decay and break down to weathering and micro organisms. Light, humidity, temperature, dust/pollutants, natural disasters/physical forces, human factors, and pests. Shattering, cracking caused by impact-possible loss structural failing: metal fatigue tear in paper. Chemical alteration: may or not be easily visible. Change in chemical structure can lead to change in color. Deterioration of one object can effect another, can also affect the value of an object. Causing weakening in base material by breaking molecules into shorter chains. Many forms for deterioration to take place under (cid:498)normal(cid:499) circumstances. Next infrared-> radio waves -> x-ray-> gamma ray. Daylight contains ultra violent and visible light because of control of earths atmosphere.
