Refractivity studies that are made for glass provide better chemical insight when attention is focused on the refractivity of the constituent oxygen atoms (RO2-). This procedure succeeds in demonstrating how the electronic state of oxygen is responsible for the glass basicity (expressed as optical basicity, Lambda). The relationship between RO2- and Lambda enables simple comparison betiveen different glass systems and allows changes in glass refractivity to be calculated from changes in glass composition, not only for systems where the silica content varies, but also for changes of modifier oxide.
|Number of pages
|Physics and Chemistry of Glasses
|Published - 2002
- ELECTRONIC POLARIZABILITY
- OPTICAL BASICITY