Why does a gas flame give heat instead of light?

When something burns, flames, eruptions or flames are produced. Candles, lamps, lanterns, etc., burn slowly as the wax or oil burns. Anything that burns is said to burn. During this action carbon particles are burned and oxygen in the atmosphere helps it.

When combustion slows down the heat gets less light more. Stoves, gas stoves etc. are pressurized to provide fast fuel. This means that their kerosene burns faster resulting in more heat and less light. Stove, gas etc. burners are designed to get more heat so they have an arrangement to expel air and fuel quickly. That is why its flame gives off more heat and is brown.