Why Do Candles Smoke When Blown Out
Jenny Gracie has been gentle on the matter…Richard – Why does a candle begin to produce smoke and smell good when blown out? Reading: Why does a candle smoke when blown out Jenny – To alleviate this question, I spoke with Duncan Graham, a professor of chemistry at the University of Strathclyde. To start, find out how it actually works. a candle.Duncan – A candle seems pretty easy: a block of wax with a wick, usually an active wire in the center. However, you want three things to start a fireplace: gas, oxygen, and a supply of warmth. Read more: why is the crate running so bad | Top Q&AJenny – I also caught up with Ricky Carvel, who teaches combustion and incinerator dynamics at the University of Edinburgh. He did this to add to the way the flame maintains its brightness. burn. The molten wax flows in the direction of the wick and is carried over the flame. Contained in a flame, it has a temperature of about 800 to 1000 degrees Celsius, and the heat is too high to break the giant wax molecules into smaller blocks. This process is called pyrolysis. Most of those burning blocks are contained within the flame and are carbon dioxide and water vapor, each of which is invisible and devoid of any scent. Duncan went on to clarify that further. Duncan – If the wax combustion is 100% complete, only warmth, steam, and carbon dioxide can be produced. However, we’ve all seen the stains that can be left on candle holders’ burn marks. On a larger scale, dark spots are seen on the back of the fire going up the chimney. This is due to the incomplete combustion of the wax, which produces tiny carbon particles that we name carbon black. Read more: why does my laptop battery drain so fast | Top Q & AJenny – That explains why we see smoke. But what about scent? When a candle is blown out, the flame stops immediately, however, the wick and wax are still hot anyway, so pyrolysis continues for a few seconds. Strong particles and strong-smelling gases are produced in a second, however, without a flame to ignite them, they rise up like smoke. That’s what we see coming out of the wick and this is the reason the smoke smells better without the flame. Duncan – The combustion of any gas goes exactly the same. By this logic and on a much larger scale, if we want a supply of gas equivalent to coal for further combustion, then we can strictly blow air into it to expand the oxygen. In turn, this will increase the efficiency of the combustion process resulting in a cleaner flame and less smoke. Next week we now have this query from Leah.Leah – So why are some people good at mimicking accents and making an impression while others aren’t? Obviously, you can be taller when applying, but why are some people born with the ability to imitate and a few not? Read more: if he likes me why is he blocking me | Top Q&A
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