Which among the following is used to generate light, to weld metals?
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where's the options.....
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Since the options are not given, I am giving a few sources of light that are used for welding metals.
Welding is a way of tightly bonding two metals by melting them where they meet. A source of heat is applied to melt the two metals so they fuse and form a secure joint.
One common form of welding involves using an oxyacetylene gas torch, which makes an intense flame by burning acetylene (an energy-rich fuel made from a simple hydrocarbon molecule) in a rich supply of oxygen.
In factories, it's usually more convenient to weld with electrical power using a technique known as arc welding. Arc welding produces both bright visible sparks and discharges of ultraviolet light, both of which can lead to blindness; that's why you'll always see people arc welding behind wraparound protective visors.
Instead of a gas torch, a piece of metal called an electrode is also used which is connected to a high-current power supply.
Other heat sources for precision welding include ultrasonics, lasers, and electron beams.
Welding is a way of tightly bonding two metals by melting them where they meet. A source of heat is applied to melt the two metals so they fuse and form a secure joint.
One common form of welding involves using an oxyacetylene gas torch, which makes an intense flame by burning acetylene (an energy-rich fuel made from a simple hydrocarbon molecule) in a rich supply of oxygen.
In factories, it's usually more convenient to weld with electrical power using a technique known as arc welding. Arc welding produces both bright visible sparks and discharges of ultraviolet light, both of which can lead to blindness; that's why you'll always see people arc welding behind wraparound protective visors.
Instead of a gas torch, a piece of metal called an electrode is also used which is connected to a high-current power supply.
Other heat sources for precision welding include ultrasonics, lasers, and electron beams.
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