What's the plural form of Rayleigh scattering? Here's the word you're looking for.
Answer
The noun Rayleigh scattering can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be Rayleigh scattering.
However, in more specific contexts, the plural form can also be Rayleigh scatterings e.g. in reference to various types of Rayleigh scatterings
or a collection of Rayleigh scatterings.