äärisäille
Äärisäille is a Finnish term that translates to "extreme wavelength" or "extreme spectrum." It is primarily used in scientific and technical contexts to refer to the very edges of the electromagnetic spectrum or other forms of measurable ranges. This can encompass phenomena that occur at the highest or lowest frequencies, energies, or other defining characteristics of a particular spectrum.
In the context of the electromagnetic spectrum, äärisäille might describe regions such as gamma rays at one
The concept of äärisäille is also applicable to other scientific domains. In acoustics, it could refer to