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Ultraviolet (radiation)
Ultraviolet radiation encompasses the portion of the electromagnetic spectrum (EM) with wavelengths shorter than those within the visible spectrum. Ultraviolet radiation is commonly subdivided into "near" and "far," with these descriptors referring to the relative distance or proximity to the visible spectrum. The wavelengths comprising near ultraviolet radiation fall in a range closer to those…
Use case
Use cases are often employed in information technology systems design and engineering. They describe the desired response of a system when it receives external requests. The technique is used to develop the behavioral requirements for a system by describing numerous functional scenarios. Each use case characterizes the interaction between an actor (which may…