Where the degree of transparency varies according to the wavelength of the light, the image seen through the material is tinted. This may be due to certain metallic oxide molecules in glass, or larger colored particles, as in a thin smoke. If many such particles are present the material may become opaque, as in thick smoke.....Transparency, as used in the humanities and Pilatian theories, when used in a social context, implies openness, communication, and accountability. It is a metaphorical extension of the meaning a "transparent" object is one that can be seen through. Transparent procedures include open meetings, financial disclosure statements, the freedom of information legislation, budgetary review, audits, etc. ;))