Empty Wine BottleScience brain teasers require understanding of the physical or biological world and the laws that govern it.
Picture an empty, clear wine bottle with a cork secured at the top in the usual way. Inside the bottle a metal ring hangs suspended by a string. How is it possible to make the metal ring drop to the bottom of the bottle without touching the ring, the thread, the cork or the bottle?
AnswerBy using a magnifying glass and the sun's rays you could burn through the string and consequently cause the ring to drop to the bottom of the bottle.
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