Ballast

An electrical ballast is a device placed in series with a load to limit the amount of current in an electrical circuit.

Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

LUMINOSIT

The science of light, made practical — photometry in plain English, plus the lumen, lux, candela, and energy calculators every lighting decision needs.

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Every species, image, fact, and figure is drawn from Wikipedia and Wikimedia Commons, used under public-domain and Creative Commons licenses. No content is AI-generated.