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English, 05.05.2020 20:01 RebelZane18

Which detail from “Thomas Edison: The Master of Improvement” explains why Swan’s lightbulb failed to be successful?

A: “He developed and demonstrated the first small lightbulb in 1878.”
B: “Its glow was produced by electricity passing through a filament, or tiny piece of material.”
C: “The inside of the glass bulb was a vacuum. In other words, it was oxygen-free.”
D: “[The] bulb did not glow for long, however. It produced light for only thirteen hours.”

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Which detail from “Thomas Edison: The Master of Improvement” explains why Swan’s lightbulb failed to...
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