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What type of bearing did Leonardo da Vinci sketch using free-moving balls to reduce friction?
Answer
Ball bearing
What canopy-based safety device did Leonardo da Vinci describe for descending from great heights?
Answer
Parachute
What type of aircraft did Leonardo da Vinci sketch with flapping wings powered by a person?
Answer
Ornithopter
What keyboard instrument did Leonardo da Vinci design with bowed strings instead of plucked or struck strings?
Answer
Viola organista
What wheeled device did Leonardo da Vinci design to move without a horse or external animal power?
Answer
Self-propelled cart
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Latest trivia questions
What wheeled device did Leonardo da Vinci design to move without a horse or external animal power?
Answer
Self-propelled cart
What was the name of the U.S. order issued to Japan's forces after the 1945 surrender?
Answer
General Order No. 1
What is the Japanese name of Emperor Hirohito’s recorded surrender broadcast?
Answer
Gyokuon-hōsō
Who was Japan's first signatory on the 1945 Instrument of Surrender?
Answer
Mamoru Shigemitsu