Jerry
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Punctuation
Colon (punctuation)
Colon Classification (1933 CC)
PMEST (Personality Matter Energy Space Time)
Energy
Types of Energy
Potential Energy
Solid Mass Gravitational Energy Storage
GravityLight
Attachments
GravityLight
Parents
Lighting for Development
Solid Mass Gravitational Energy Storage
Children
GravityLight
This light doesn't require an outlet