Why we can see the candle flame in a dark room?

Very simple to answer this! Because the elevator is an enclosed space, all the air and people and candles will travel together, experiencing any and all forces as a closed system. The candle flame wouldn’t even flicker. The only exception is during sudden movements.

Why LPG flame is different from candle flame?

The candle is made up of wax which does not completely burn whereas LPG (Liquified Petroleum Gas ) gives complete combustion. Hence, a candle produces a yellow flame whereas burning of LPG produces blue flames.

Why is the flame of a gas stove hotter than the flame of a burning candle?

One factor is the energy released from the fuel’s combustion. Blue flames are normally hotter than luminous flames like that of a candle, because in a luminous flame, carbon particles formed in incomplete combustion radiate energy away as infrared radiation and visible light.

Why is the yellow flame called the safety flame?

If the holes are closed, the gas will only mix with ambient air at the point of combustion, that is, only after it has exited the tube at the top. This reduced mixing produces an incomplete reaction, producing a cooler but brighter yellow, which is often called the “safety flame” or “luminous flame”.

How far can the human eye see a candle in the dark?

Seeing distances Detecting a candle flame: Researchers believe that without obstructions, a person with healthy but average vision could see a candle flame from as far as 1.6 miles. Without the Earth’s curve and from higher up: You might be able to identify objects from dozens, even hundreds, of miles away.

How light is formed in the candle?

For a candle to burn, a heat source (commonly a naked flame from a match or lighter) is used to light the candle’s wick, which melts and vaporizes a small amount of fuel (the wax). Once vaporized, the fuel combines with oxygen in the atmosphere to ignite and form a constant flame.

What is the colour of LPG flame?

blue
With complete combustion, an LPG (Propane) gas flame colour is blue and burns at a temperature of around 1,980°C, which is 20°C higher than a natural gas blue flame colour.

Why the colour of candle flame and kitchen stove flame is different?

candle flame appears to be yellow in colour when we burn it , this is because of the presence of O2 (oxygen) in it. while the flame of a gas stove appears to be blue b’coz of H2(hydrogen)in it..

Why does a candle burn longer in pure oxygen than air?

The candle with more oxygen molecules is said to have a higher concentration of oxygen than the other candle. This means that the candle will burn brighter and quicker.