History of producing fire from friction

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If you have seen a train running on the sidewalk, you may have seen sparks flying between the wheels and the wheels, even if two pieces of iron were loudly hit.  Some types of stones also sparkle when they collide.  Heat is generated by friction and shock.  When the iron is striking, its microorganisms fly.  The heat generated by the shock also heats up the particles.  And as it is subtle, it immediately turns red.  So sparks are actually hot iron particles.  Friction and shock release energy.  And the proportion burns even more in close proximity, due to the strong winds, even when the branches of the forest trees continue to penetrate, the sparks are created and there is a fire in the forest.  In earlier times, fire was only ignited by friction.
The primitive humans made a small hole in one of the big pods, and the other wood quickly turned into abrasive fire.  Flint was a means of producing fire.  Put iron on the ground There was a method of lighting a fire by rubbing two pieces and throwing it on its spar.  Older lighters used to be small beds.  Turning the small wheel of metal over the bed as it rotated, the nearby rooney wick lit up.  Fire has always been found through friction.  Even after the discovery of Diwasali, the fire is lit by the friction of the bar on the wall and the armpit.  The gas lighter also produces a fire spark by striking a piece of piezo metal.  After the discovery of electricity, heat generating methods were discovered.

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