Technology Trivia Quiz

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5. More by Bell

Alexander Graham Bell is best known for inventing the telephone, but he was a man of many interests. Another product for which he received patents was:

A) A cement-burning kiln
B) A hydrofoil boat
C) A “magic lantern” projector
D) A vacuum cleaner

Your answer — C) A “magic lantern” projector — was incorrect.

In later life, Bell lived in Nova Scotia, Canada, where he worked for years with Casey Baldwin to develop a practical hydrofoil watercraft. A hydrofoil has a wing-like structure on its hull that raises the boat out of the water when it is moving; the consequent reduction in drag allows the boat to achieve much greater speeds. In 1919, Bell’s hydrofoil, the HD-4, set a world marine speed record of over 70 miles (110 km) per hour that stood for ten years. The cement-burning kiln was patented by Thomas Edison, the vacuum cleaner by I.W. McGaffers, and the “magic lantern” projector by Henry R. Heyl.

Click “Question 6” below to continue the quiz.


Question 4 Question 6