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Jun 4, 2020 · Black light is ultraviolet light or a lamp that emits most of its light in the ultraviolet part of the spectrum. Black light is beyond the range of human vision, so a room illuminated with a black light appears dark. Other names for black light are ultraviolet light or UV-A light.
A device that produces an electric current or voltage reliant on on the degree of the brightness of the surrounding environment. They are commonly used in “dusk-to-dawn lights” that turn on when the environment is dark and turn off when it’s bright.
Lamp. Any of the various devices for producing light or/and sometimes heat. Types of lamps include tubes, bulbs, capsules, and spots. Leading Edge Dimmer. It is a popular type of dimmer switch which is surprisingly incompatible with most LED light bulbs. A leading-edge dimmer can control lower wattage loads. LED
May 5, 2019 · A black light is a type of lamp that emits primarily ultraviolet light and very little visible light. Because the light is outside the range of human vision, it is invisible, so a room illuminated with a black light appears dark.
- Anne Marie Helmenstine, Ph.D.
Dark Sky. Refers to outdoor lighting that direct light downwards to the ground rather than out to the sides or into the night sky. This type of design meets “dark sky” ordinances that many cities have enacted in order to control light pollution. Different types of reflectors, shields, cut-off angles and bulb types may be used.
In your home’s lighting design, form and function are combined to meet your need to see in the dark while also making the space attractive and comfortable. Utility lights discard form and focus purely on function — no frills or decorative touches.
Feb 27, 2024 · Some of the newer glow-in-the-dark stuff will glow for several hours. Usually it is a soft green light, and it is not very bright. You need to be in nearly complete darkness to notice it.
