Which BBC radio-talks book made C.S. Lewis widely known during World War II?
Answer
Mere Christianity
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Which BBC radio-talks book made C.S. Lewis widely known during World War II?
Answer
Mere Christianity
What type of weapon did Leonardo da Vinci design to throw stones using a spring-powered arm?
Answer
Catapult
What type of machine did Leonardo da Vinci design to produce a continuous supply of thread?
Answer
Spinning machine
What measuring instrument did Leonardo da Vinci design with a wheel and counter to record distance traveled?
Answer
Odometer
What rescue device did Leonardo da Vinci sketch in 1485 as a pyramid-shaped canopy for safely descending from a height?
Answer
Parachute
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What type of machine did Leonardo da Vinci design to produce a continuous supply of thread?
Answer
Spinning machine
What optical device did Leonardo da Vinci study by comparing it with the human eye?
Answer
Camera obscura
What type of cart did Leonardo da Vinci design that could move without being pushed by a person or animal?
Answer
Self-propelled cart
What type of vehicle did Leonardo da Vinci design with sloping armor and internal gears?
Answer
Armored vehicle