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What protective feature did Leonardo da Vinci propose for ships to reduce flooding after hull damage?
Answer
Double hull
What automated figure did Leonardo da Vinci design in armor for a 1495 Milan court celebration?
Answer
Robot knight
What low-friction machine component did Leonardo da Vinci sketch using balls between moving surfaces?
Answer
Ball bearing
What mechanical device did Leonardo da Vinci design to create continuous percussion music without a human drummer?
Answer
Mechanical drum
What wheeled machine designed by Leonardo da Vinci is often described as an early self-propelled cart?
Answer
Leonardo’s self-propelled cart
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What wheeled machine designed by Leonardo da Vinci is often described as an early self-propelled cart?
Answer
Leonardo’s self-propelled cart
Which country is the smallest sovereign state whose official language is Latin?
Answer
Vatican City