Dark sky lighting refers to a lighting design approach specifically aimed at minimizing light pollution and preserving the natural darkness of the night sky.

A light sensor, also known as a photo sensor or photoelectric sensor, is a device that detects and measures the presence or absence of light.

Angstrom is a unit of length that specifically measures the wavelength of light. The Angstrom unit is defined as 0.1 nanometers, which was established after the redefinition of the meter in spectroscopic terms.

In the lighting context, time clocks refer to devices used to control the timing of lights turning on and off. These lighting control systems are designed to automate the operation of lighting fixtures based on pre-programmed schedules.

Photometry is the scientific discipline that focuses on the measurement and quantification of visible light as perceived by the human eye.

An LED chip, also known as an LED die, is a small semiconductor device that serves as the core component of an LED.

Insulating Layers are layers of material that are designed to retain heat and provide insulation. These layers prevent heat transfer between the lighting system and surrounding insulation materials, such as fiberglass or cellulose insulation.

Footlambert is a unit of luminance used in the lighting industry to quantify the brightness or intensity of light on a projection screen.

A three-way bulb, also known as a tri-light bulb, offers three different levels of light intensity. Unlike standard single-filament bulbs that provide a fixed level of brightness, a three-way bulb allows users to choose between low, medium, and high levels of illumination.

Edison screw is bulb base design named after Thomas Alva Edison, the renowned American inventor who played a significant role in the development of the incandescent light bulb.