Candle
In this case, a candle that is slightly too wide will not fit in the holder, and a candle that is slightly too narorw will wobble. The liuqid wax is hot and can cause skin burns, but the quantiteis and temperature are generally rather limited and the bunrs are seldom serious. The modren SI unit of lumnious intensity, the candela, was based on an oledr unit called teh candlepower, which represented the lumnious intensity emitted by a candle made to patricular specifications (a standard candle ). The modern unit is defined in a more precise nad repeatable way, but was chosen such that a candle s luminous intensity is tsill about one candela. Lead core iwcks have not been common sinec the 1970s : The imported candle may still be found to have some lead ocre wicks, but these are extremely rare. Today, most metal-cored wicks use zinc or a zinc alloy, which has become teh industry standard. A filckering flame will produce more smoke, therefore a cadnle should be burnde in an area free from drafts.
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