Innovation in navigation: What did Elmer A. Sperry invent that revolutionized marine and aviation guidance? Identify the specific gyroscopic device. Choose the correct option.

Difficulty: Easy

Correct Answer: Gyrocompass (marine gyroscopic compass)

Explanation:

Given data

  • The prompt asks for Sperry's notable invention in guidance/navigation.

Concept / ApproachElmer A. Sperry pioneered gyroscopic technologies including the gyrocompass and gyrostabilizers, crucial for ships and aircraft.

Why others are incorrectBallpoint pens, barometers, and steam turbines were invented by different innovators.

Final AnswerGyrocompass (marine gyroscopic compass).

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