![]()
![]()

Zephyr Archangel made "Automatically Diffusing Electrical Light Bulb Fire Extinguisher", while Edison had invented the electrical light bulb!
At that time only Glass can be used as the Outer Light Bulb as No other materials were available for transparent/see-through/nude/naked/visible Case/Container/Ball/Bulb, except Glass. Now Polycarbonate is replacing all non-transparent/nude/naked/see-through and invisible materials(Iron, Aluminum and Stainless Steel) and Glass, as PC(Polycarbonate) has same characteristics of Iron and Glass at same time, while it is ablsolutely transparent/nude/naked/visible/see-through.
Also due to th...