Question

Most of the mines evolve out flammable gases. the miners working deep inside them carry alantern with them, which have its flame surrounded by a copper wire mesh. the lantern produceslight safely, without burning the flammable surrounding. give reason.​

Answer 1

Answer:

Explanation:

The lantern used by miners in mines, with its flame surrounded by a copper wire mesh, is designed to provide light safely without igniting the flammable gases present in the mine. The copper wire mesh acts as a flame arrestor or flame trap, preventing the flame from coming into direct contact with the flammable gases.

There are a few reasons why the copper wire mesh is effective in achieving this safety measure:

Heat dissipation: Copper is an excellent conductor of heat. When the flame inside the lantern heats up the copper wire mesh, the heat quickly dissipates throughout the mesh. This rapid dissipation prevents the temperature of the mesh from reaching the ignition point of the surrounding flammable gases, reducing the risk of a fire or explosion.

Surface area and oxygen supply: The copper wire mesh increases the surface area of the flame. By dispersing the flame across the mesh, the available oxygen supply is reduced, limiting the flame's intensity. Flammable gases require a specific concentration of oxygen to ignite, and the reduced oxygen supply due to the mesh prevents the gases from reaching this threshold.

Flame quenching: The fine openings in the copper wire mesh create turbulence in the surrounding air, disrupting the flame's continuity. This turbulence effectively extinguishes any small flames that might attempt to pass through the mesh. It acts as a physical barrier to prevent the flame from spreading and coming into contact with the flammable gases.

By incorporating a copper wire mesh around the flame, the lantern ensures that the flame's heat, intensity, and potential ignition sources are effectively controlled. This significantly reduces the risk of igniting the flammable gases present in the mine, providing a safer environment for the miners to work in.