UVC light, also known as ultraviolet-C light, is a specific type of ultraviolet light that is used in the lighting industry for its germicidal properties.

A rim light, also known as a hair light or halo lighting, is a lighting technique commonly used in photography and cinematography.

A recessed light, also known as a can light or downlight, is a type of lighting fixture that is installed into a surface, typically a ceiling, creating a clean and seamless look.

A diode is a semiconductor device that allows current to flow in one direction while blocking it in the opposite direction.

Radio Frequency Interference (RFI) describes the unwanted noise or disturbance that occurs in radio signals. It occurs when electromagnetic signals, emitted by electronic equipment or other transmitters, interfere with radio signals.

A DRL light, also known as Daytime Running Light, is an automotive lighting feature designed to enhance the visibility of a vehicle during daylight hours.

Coherent light is the electromagnetic radiation that exhibits synchronization in both the spatial and temporal domains. This synchronization is characterized by the waves shining in the same direction, swinging at the same level, and having the same phase.

Visual task is a specific activity or work that relies on visual perception and clarity. It encompasses tasks such as reading, writing, drawing, and computer work, which are performed in designated locations.

Power Factor (Pf) measures the efficiency of electrical power usage in lighting systems. It represents the ratio between real power (measured in watts) and apparent power (measured in volt-amperes or VA).