“Trick candles”的意思、由来-开放百科全书

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Trick candles

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Trick candles are a novelty candle often used at children's birthday parties. These candles relight themselves, using a fuse similar to those in dynamite sticks, the principle being that by igniting magnesium inserted into the wick of the candle, the paraffin vapour given off when a candle is blown out can be set alight, and through this, the candle can reignite.^[1]

Despite being a principle shared with dynamite, these fuses are, however, much less dangerous, and are easily extinguished with water.

Trick candles are banned in Canada.^[2]

References

1. ^How do trick birthday candles work?
2. ^https://www.canada.ca/en/health-canada/services/consumer-product-safety/advisories-warnings-recalls/information-canadians-travelling-outside-canada.html

2 : Candles|Practical joke devices

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