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

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

Question

27-04-2020
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Which detail from “Thomas Edison: The Master of Improvement” explains why Swan’s lightbulb failed to be successful?

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

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jayilych4real jayilych4real · Answer 1 · 2021-10-19T12:17:30+02:00

The detail from “Thomas Edison: The Master of Improvement” that explains why Swan’s light bulb failed to be successful is:

D. “[The] bulb did not glow for long, however. It produced light for only thirteen hours.”

According to the given excerpt, we can see that the author is talking about the world famous scientist Thomas Edison who was credited with some important inventions which we still use to this day.

However, Swan's light bulb was not successful because it did not glow for very long and as a result of it, it was considered a failure and not fit to be patented.

Therefore, the correct answer is option D