Can you relight a candle without touching it?

You can relight a candle without touching the flame to the wick; only the smoke needs to be touched by the flame. It may seem ludicrous too you, but it really works and it's easy, too.

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Consequently, how do you starve a fire?

Smothering. By excluding the oxygen in the surrounding atmosphere, the fire will be extinguished. Smothering can be achieved by using sand, blanketing, foam application or by the use of chemical extinguishers. What is the single most common cause of fire? The biggest single cause of any fire incident is human behaviour; the danger in your workplace or home comes primarily from either the action or negligence of you and those around you. A fire will only start if 3 key elements are brought together.

In respect to this, why is oxygen necessary for burning?

Oxygen. Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.). Is candle smoke harmful? A 2009 study by U.S. researchers found that paraffin-based candles release carcinogens and chemicals that could raise the risk of asthma. A longer candle wick will produce more soot and a smoky flame, which releases even more air pollution. So yes, candle smoke is bad for you and your lungs.

Moreover, are candles supposed to smoke?

A properly burning and well-made candle can produce a little smoke every now and then, but it should never continuously smoke. If a noticeable amount of smoke is being generated, knowing the causes can help stop it. Move your candle out of a draught.