Why trick Birthday candles do not blow out?
Usually they add magnesium to the candles. There’s a great article on howstuffworks.com that explains how this trick works: http://science.howstuffworks.com/question420.htm quote: “Normally there is a burning ember in the wick that causes a ribbon of paraffin smoke to rise from the wick. That ember is hot enough to vaporize paraffin but it is not hot enough to ignite the paraffin vapor. The key to a re-lighting candle, therefore, is to add something to the wick that the ember is hot enough to ignite.
