Pick from:
[i] hair-thin molecules
[ii] hair-thin spokes
[iii] epidermis and dermis
[iv] hydrogen and oxygen
[v] activation energy
[vi] an electron lens
[vii] hair-thin hairs
[viii] hair-thin fibers of glass
Q: Fact 1: An incandescent light bulb converts electricity into light by sending electricity through a filament. Fact 2: Fiber optics works by carrying light along hair-thin filaments of glass. Given the two facts above, an incandescent light bulb converts electricity into light by sending electricity through what?
A:
[viii]