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What Leonardo da Vinci mechanism helped make a rotating shaft move more smoothly?
Answer
Ball bearing
What did Leonardo da Vinci call his rotating aerial machine with a helical sail?
Answer
Aerial screw
What flying machine did Leonardo da Vinci sketch with four wing-like surfaces operated by people?
Answer
Ornithopter
What was the original Japanese television format adapted into the BBC business show Dragons' Den?
Answer
Money Tigers
Which Dragon joined BBC's Dragons' Den in series 13 after becoming known for buying and revitalising struggling brands?
Answer
Touker Suleyman
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Latest trivia questions
What did Leonardo da Vinci call his rotating aerial machine with a helical sail?
Answer
Aerial screw
Which Dragon joined the UK version of Dragons' Den in series 3, in 2006?
Answer
Deborah Meaden
In the UK version of Dragons' Den, which Dragon is known for founding Phones 4u?
Answer
John Caudwell