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What Leonardo da Vinci design used a system of balls to reduce friction between moving surfaces?
Answer
Ball bearing
Which Leonardo da Vinci machine used a spiral cylinder to compress and move air?
Answer
Helical air screw
What shipbuilding safety feature did Leonardo da Vinci propose with two separate hull layers?
Answer
Double hull
Which Leonardo da Vinci transport design is often called the first automobile?
Answer
Self-propelled cart
What Leonardo da Vinci invention concept used gears to perform calculations?
Answer
Mechanical calculator
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Which Leonardo da Vinci machine used a spiral cylinder to compress and move air?
Answer
Helical air screw
Which Leonardo da Vinci transport design is often called the first automobile?
Answer
Self-propelled cart
What Leonardo da Vinci invention concept used gears to perform calculations?
Answer
Mechanical calculator
Which Leonardo da Vinci design is regarded as an early humanoid robot?
Answer
Mechanical knight
What musical instrument did Leonardo da Vinci design with strings bowed by a wheel?
Answer
Viola organista
Which Leonardo da Vinci invention concept used a screw mechanism to lift water?
Answer
Archimedes’ screw
Which Leonardo da Vinci design imitated bird flight by using flapping wings?
Answer
Ornithopter