Adding neem leaves' extract to candles can be useful in killing or keeping away the mosquitoes. Neem fumes will also purify the surrounding atmosphere to some extent. So such candles can be useful at home and office both.
The useful energy you get from a candle is primarily in the form of light and heat. The light emitted by a candle can illuminate a space, while the heat produced can be used for warming a room or cooking food.
Hematite is the naturally occuring mineral form of Iron (III) Oxide, or Fe2O3. As such, it is possible to extract pure iron from it.
To candle, past tense: Candled
The light of a candle is a form of radiant energy, which is produced when the candle's wax and wick combust and release energy in the form of heat and light.
Heat and light energy.
Potential energy is in an unlit candle, which is converted to heat energy, once the candle is lit.
Sodium extract is commonly used for detecting elements because it has a high sensitivity to the presence of certain metal ions. When a sample is exposed to the sodium extract, emission lines are produced that can be analyzed to determine the elemental composition of the sample. This method is particularly useful in spectroscopic analysis.
The input form of energy for a candle is chemical potential energy stored in the wax and wick. When the candle is lit, this chemical energy is converted into heat and light energy through the process of combustion.
A lit candle releases light energy in the form of visible light and thermal energy in the form of heat.
Fluid Extract The fluid extract form of an herbal remedy can be made with alcohol or glycerin.
A candle primarily produces thermal energy through the combustion of wax and wick. The heat generated from the flame is a form of thermal energy that is released into the surrounding environment.
The melting of a candle is a reversible change because the solid wax can be cooled and solidified again to form a new candle.