In the lighting industry, efficacy refers to the measurement of how efficiently a light source converts electrical power into visible light.

Low light refers to a situation where the level of ambient light is significantly reduced. This can occur in various settings, such as indoor environments with minimal natural light, poorly lit streets at night, or even during overcast days.

Filtered light, also known as indirect light, refers to sunlight that has been softened or diffused by passing through a medium or obstruction, such as a sheer curtain or foliage.

The cutoff angle is the angle between the vertical axis of a luminaire (light fixture) and the line of sight of the illuminant (light source) where high brightness is not visible.

A puck light is a compact and versatile lighting fixture that is commonly used for under cabinet lighting. It is named after its resemblance to a hockey puck, with a round or oval shape.

A type T bulb is a light bulb that has a tubular shape. The “T” in “type T” stands for “tubular.” These bulbs are commonly used for halogen lighting and are characterized by their tubular shape and double-ended base, which typically consists of dual prongs.

In the lighting industry, a diffuser refers to a device or material used to disperse light in a way that reduces glare and creates a softer, more diffused illumination.

A T10 bulb, also known as a mini wedge bulb, is a commonly used lighting component in the automotive industry. It is the most prevalent type of bulb found in cars and trucks, and it serves various lighting purposes such as glove boxes, dome lights, map lights, door lights, cargo lights, reverse lights, and license plate lights.

In the lighting industry, the term “harmonic” refers to a component of a distorted or non-sinusoidal periodic signal that has a frequency that is a non-zero even integer multiple of the fundamental frequency of the signal.

In the lighting industry, specifically in LED lighting, a driver refers to an LED driver. An LED driver is a self-contained power supply that regulates the power required for an LED or an array of LEDs.