Blackout Bulb Sheds Downward Beam of Soft Blue Light

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Part of Blackout Bulb Sheds Downward Beam of Soft Blue Light

Silvered inside to provide a downward beam that cannot be seen from outdoors, a new blackout bulb offers soft illumination for the home during air raids. The 25-watt bulb is covered with a black silicate coating to prevent light leaks, and its tip is dark blue, shedding a blue light.

Title (Dublin Core): Blackout Bulb Sheds Downward Beam of Soft Blue Light