Articles

It's _____ well known fact that _____ electric light was invented by Edison.

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Edison's light bulb was ___ result of many scientists' work.

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______ English scientist had made _____ electric light 70 years earlier.

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Edison's development of ___ idea wouldn't have been possible.

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Similarly, ___ Wright brothers are generally credited with inventing ____ first airplane.

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It was at ___ start of _____ 20th century.

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Yet dozens of ____ inventors took steps in developing ____ sustained flight.

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For instance, ____ Norwegian supposedly flew a glider in 1825 and later _____advances were made.

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In fact, just before ___Wright brothers' famous flight, ___ American named Langley flew over ___ Potomac River.

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It seems that ___ person who not only achieves a particular feat but also records it, is also credited with ___ discovery.

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