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A Shot in the Dark: A Creative DIY Guide to Digital Video Lighting on (Almost) No Budget by Jay Holben

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AC/DC

No, I’m not talking about the great rock band here; I’m talking about two forms of electrical service: alternating current and direct current.

Direct Current (DC)

Direct current, which is primarily used in batteries now (but at one time was a major consideration for standard electrical delivery and, for a long time, was the primary form of electricity used in film studios), consists of one positively charged ( + ) cell and one negatively charged (–) cell. When the two are connected, it creates a flow of electrons from one to the other. The device situated between these cells, allowing the flow of electricity through it, will be powered by that flow of electrons. If it’s a light bulb, the flow of electrons through the filament will create ...

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