Scientific facts to answer for some of ur Y's: Y do flames always go upwards???

Sorry for the long gap guys. Scientific facts coming your way again :)

 

Flame, a holy symbol in many countries, heat a few layers of air nearby and make them less dense. Due to buoyancy this heated air moves vertically upwards creating a sort of low pressure near the flames This causes the cool air from far away layers to flow towards the flame from the sides and below. 

   

    Oxygen present in the air keeps the fuel burning. The air near the flame gets heated very much and moves faster. The dynamics of air flow near the flame is a complex process however mathematicians have modelled it and found that there is a greater(faster) outflow of hot air right above the flame with a smaller(slower) inflow from the sides and below. The hot air goes up and then mixes with environment and cools down. This theory holds good only the candles or wick-stoves and not for welders torch or the like where the fuel is forced in a particular direction                                                 

   Gravity makes the air more dense nearer to the ground - so it is also because of gravity that flames burn upwards, backwards as that sound!

    If there is wind blowing, the fire will bend in the direction of the wind to catch as much of it as possible.
    If there's an explosion underwater, the flames will go everywhere: it's surrounded by water which is filled with oxygen.

So always UP goes the FLAME =)



Thats all folks, A Scientific fact thus explained.


More to be continued................. :)