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What did Dewar's invention revolutionize?

Cooking
Storage of gases
Transportation
Communication

Answer

Storage of gases was revolutionized by James Dewar's invention of the vacuum flask, also known as the Dewar flask. This double-walled container, with a vacuum between the walls, effectively insulates its contents, minimizing heat transfer. This innovation enabled the safe and efficient storage of liquefied gases, such as oxygen, nitrogen, and hydrogen, which are essential for various scientific, industrial, and medical applications.