Driving down the road yesterday they were repairing some electrical lines and I guess one of them sparked and it left a trail of blue sparks on the ground. But when I hook up a battery and short it with a wire sparks appear an orangish-yellow color.
Anyone know why?
In: Engineering
Sparks are just hot pieces of things (usually metal), and they just happen to be glowing in that temperature range to produce red to white light. “Electricity” is that white/blue/sometimes purpleish color when it arcs because it’s actually turning certain elements in the air into a plasma. The arc is so hot it’s ripping electrons off the atoms, ionizing the gas, and the color light it gives off (called it’s emission spectrum) is that bright blue color.
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