Foundations

The common conventions are SI units, vacuum wavelengths, and explicit conditions. For gases, distinguishing a per-particle response from a density-dependent index is essential. Begin with the gas-index example if you want to see those conventions in a calculation first.

Read the conventions before comparing optmat with a published value. Then read about model identity to understand status, qualified intervals, and what to save with a result. The next chapter applies these ideas to Gas dispersion and absorption.

• Conventions
• Identity, status and validity

Reference interfaces: optmat.conditions, optmat.identity, and optmat.exceptions. For the source’s own units and conditions, see From a paper to a model and The curated data.