EPISODE · Apr 13, 2011
EncycloPOD Objects: Light Bulb
from EncycloPOD · host Elizabeth Hauke
THIS EPISODE OF THE ENCYCLOPOD objects series is about the light bulb. FIND OUT: who invented the light bulb how the light bulb works what different types of light bulbs are available which light bulbs are better for the environment Copyright 2011 Elizabeth Hauke. All Rights Reserved.
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