Words Archive - Atmosfera Mag

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A

Angle of incidence

The angle between a ray of light striking a surface and the line perpendicular to the surface at the...

Ambient lighting

General lighting that provides a consistent level of light throughout a space and creates a sense of...

B

Black body radiation

The theoretical radiation emitted by a perfect radiator, also known as Planck’s law

Beam angle

The angle between the two directions in which the luminous intensity is 50% of the maximum luminous intensity

C

Control gear

The electronic devices that control the operation of a lighting system, such as ballasts, drivers, and...

Chromaticity

The quality of a light source that determines its color appearance, characterized by the x and y coordinates...

D

Diffuse reflection

The reflection of light from a surface in many directions, as opposed to specular reflection, where the...

Daylight harvesting

The process of using natural light to supplement or replace artificial light in a building, to reduce...

E

Emergency lighting

Lighting that is provided to ensure the safety of occupants during power failures or other emergency...

Efficacy

The ratio of the light output (lumens) of a light source to the power input (watts) of the same source,...

F

Emergency lighting

Lighting that is provided to ensure the safety of occupants during power failures or other emergency...

Efficacy

The ratio of the light output (lumens) of a light source to the power input (watts) of the same source,...

G

Green lighting

The use of energy-efficient lighting systems and technologies to reduce environmental impact

Glare

Uncomfortable brightness caused by excessive luminance that can be direct or indirect, caused by the...

H

High-bay lighting

refers to a type of lighting that is designed to provide bright, directional light to areas with high...

High-Intensity Discharge (HID) Lamp

A type of electrical gas-discharge lamp that generates light through an electric arc between tungsten...

I

IES file

An IES file is an industry standard file format used to describe the light distribution of a particular...

Indirect Lighting

A type of lighting design that focuses on creating a soft and diffuse ambient light, which bounces off...

J

Junction box

A junction box is a metal or plastic enclosure used to contain and protect electrical connections. It...

Jelly Jar Fixture

A type of outdoor light fixture that resembles a traditional jelly jar and is commonly used to provide...

K

Knockout

A type of fixture or mounting box that is recessed into a wall or ceiling to provide a seamless integration...

Kelvin (K)

A unit of measurement for color temperature

L

Luminance

The amount of light that is emitted from a surface in a specific direction

LED (Light Emitting Diode)

A type of solid-state lighting technology that is highly energy-efficient and long-lasting

M

Modular lighting

A lighting system made up of interchangeable components that can be combined in various ways to achieve...

Multi-point lighting

A lighting system in which multiple sources of light are used to illuminate a space

N

Narrow beam lighting

A type of lighting that uses a narrow, focused beam of light to direct light in a specific area or on...

Natural daylight

Light that comes from the sun and is present in a space through windows or skylights

O

Outdoor lighting

Lighting designed for outdoor use, including garden and landscape lighting, street and road lighting,...

Optical lighting

A lighting system that uses lenses and mirrors to control the direction and spread of light

P

Programmable lighting

A lighting system that can be programmed to change or adjust lighting levels and colors in response to...

Point source lighting

A type of lighting in which light is emitted from a single, small source, such as a light bulb or LED

Pendant lighting

A type of overhead lighting that hangs from the ceiling, typically on a chain or rod

Q

Quantum Efficiency

The percentage of photons emitted by a light source that are useful in producing light

Quality of Light

The perceived visual characteristics of a light source, including brightness, color, and uniformity

R

Reflection

The process by which light is reflected off a surface and redirected in a different direction

Recessed Lighting

Lighting fixtures that are mounted in a cavity in the ceiling and project light downward

Radiant Flux

The total amount of light energy emitted by a light source, measured in watts

S

Spectral Power Distribution (SPD)

A measurement of the distribution of light energy across the electromagnetic spectrum, often used to...

Sensitivity

A measure of a photometer’s responsiveness to light, used to determine the accuracy of a lighting...

T

Troffer

A recessed light fixture, often rectangular in shape, typically used in office and commercial spaces...

Thermal Management

The process of controlling the temperature of a lighting system, including the heat generated by light...

U

Underwriters Laboratories (UL) Listing

A certification that a lighting product has met the safety standards set by the Underwriters Laboratories,...

Ultraviolet (UV) Radiation

Electromagnetic radiation with a wavelength shorter than visible light, which can cause damage to human...

V

Visual comfort

The degree of visual comfort in a space depends on the quality of the light, the distribution of light...

Vibration Reduction

A method to minimize the impact of vibrations and instability on lighting fixtures and lighting installations

W

Warm White

A type of light that has a yellow-red hue, typically ranging from 2700K to 3000K. Warm white light is...

Watt

A unit of measurement for power. In lighting, it is commonly used to indicate the power consumption of...

X

Xenon lamps

A type of gas discharge lamp that uses xenon gas to produce bright, white light. Xenon lamps are often...

Xenon

A type of gas used in some high-intensity discharge (HID) lamps, such as xenon arc lamps and xenon short-arc...

Y

Yoke

A device used to mount or support a lamp or lighting fixture

Z

Zero-to-Ten Dimming

A type of dimming control system that uses a 0 to 10 Volt DC signal to control the brightness of lights

Zonal Lumen Method

A method used to determine the amount of light that reaches specific areas in a room or space

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