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Besides radio, in what other field did Fessenden receive notable patents?

  • Sonar

  • Photography

  • Electric car

  • Telegraph

Answer

In addition to radio, Reginald Fessenden also made significant contributions to the development of sonar. Essentially an underwater version of radar, sonar uses sound waves to detect objects and measure their distance. Fessenden's research in this area laid the groundwork for the technology that would later become crucial for submarine detection and communication beneath the depths of the sea.
The Remarkable Reginald Fessenden: A Quiz on the Canadian Inventor and Innovator

The Remarkable Reginald Fessenden: A Quiz on the Canadian Inventor and Innovator

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