New posts in Arc

joining two points on an arc

In the recent Con-Ed transformer "fire", what exactly produced the color of the huge blue glow over New York City?

Why do fuses have a maximum breaking capacity?

Why does only the tip of the electrode melt when arc welding?

How can low voltage, high current (kA) power be dangerous?

Is it really possible to "boost" 6 V DC to above 50 kV? Or even 400 kV?