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52<br />

The Chandelier Clock is an invention by Ali b. Abdarrahman b. Ahmed ibn Yunis. In this clock, 1 bulb turns off<br />

for each hour elapsed at night. The first bulb contains gasoil to burn for as much as 1 hour, while the 12th bulb<br />

has enough to burn for 12 hours. If bulbs are burned at the same time, theri numbers are read they burn out.

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