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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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Bulbs 101: The Science Behind Tungsten Light

Tungsten is a natural element (atomic number 74 on the periodic table); a very brittle metal with the highest melting point of all metals (3,422°C). It is the fundamental element of incandescent fixtures, being the primary component of the filament inside the bulb.

A tungsten lamp consists of the following parts:

  • Base

  • Filament

  • Envelope (bulb)

  • Inert gas

The filament of an incandescent light bulb.

The various components of the standard light bulb. Base (A), Filament (B), Envelope (glass bulb) (C), and inert gas (D).

When electricity is supplied to the bulb, the electrons passing through the filament ...

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