The model for the mean dispersion, 10⁴×(n_F–n_C) (λ_F = 486.13 nm (blue), λ_C = 656.27 nm (red)), at room temperature is currently being updated for several weeks, possibly until March 2008. In the meantime, the following diagram may be used for orientation. Please check back at a later time for more detailed information.

The spider-graph below shows the influences of selected glass component additions on the elastic modulus of a specific base glass, while keeping the molar ratios of all remaining components constant. The spider-graph will be different for other base glass compositions.

Influences of selected glass component additions on the mean dispersion of a specific base glass (click image to enlarge)