I'm new to all this electricity stuff so bear with me as my questions could sound silly. I'm just trying to learn the interaction between things.
Let's say I had a basic circuit e.g 12 volts DC only consisting of an led and a resistor connecting one another with insulated aluminum wire and grounded to an aluminum bus bar.
I remove the "grounding wire" when the circuit is "live" obviously it sparks...the color of the spark is blue, if I reconnect it while still live the spark turns red, if I remove it again it turns green, if I connect it again it turns purple, and so on and so on down the spectrum of the rainbow. I haven't tried tried this, I'm just more so curious as to what gives the spark it's color between 2 metals. And would the color of the spark between 2 of the SAME metals ever change color? What if they did change color what would that mean, or why would it do that?
Let's say I had a basic circuit e.g 12 volts DC only consisting of an led and a resistor connecting one another with insulated aluminum wire and grounded to an aluminum bus bar.
I remove the "grounding wire" when the circuit is "live" obviously it sparks...the color of the spark is blue, if I reconnect it while still live the spark turns red, if I remove it again it turns green, if I connect it again it turns purple, and so on and so on down the spectrum of the rainbow. I haven't tried tried this, I'm just more so curious as to what gives the spark it's color between 2 metals. And would the color of the spark between 2 of the SAME metals ever change color? What if they did change color what would that mean, or why would it do that?