Talk:Electric arc

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Can melt or vaporize "virtually anything?" What is that supposed to mean? Sounds like a magic weapon! Maybe be specific on hardnesses of things it can't melt? I don't know enough about it, but that made me laugh.

—Preceding unsigned comment added by (talk) 18:59, 18 October 2007 (UTC)

It is generally dangerous to look at an electric arc (except perhaps from a great distance), because it generally makes UV radiation that can be blinding, as I have been told. You might want to add that here on the arc page - and even flag it in your front page article on welding.Pdn 02:25, 31 May 2005 (UTC)

We have tons of articles about arcs and sparks but I am still not clear on the differences between each. See Talk:Spark gap#Clarify the difference for some questions I have about the different kinds of discharge. - Omegatron 14:20, August 2, 2005 (UTC)

Does the magnetic field of the arc "attract" itself and change its shape? I know the shape changes due to heating of the air and convection. It seems like maybe the magnetic field would twist the arc? Just a hunch. - Omegatron 13:40, August 5, 2005 (UTC)

There seems to be an incorrect use of the word "etch" in the "Plasma Path" section. Also, the entire section seems anecdotal and non-essential. -- Brian Williams

I deleted plasma path section --Vladimír Fuka 19:55, 1 September 2006 (UTC)

Electrical properties[edit]

A glow discharge is not an arc. Discuss current vs. voltage characteristics of arcs; higher current arcs need less voltage to sustain them, so there is an incremental negative resistance (source of many interesting properties). Discuss the regieme of currents - arcs only appear at fractions of an amp and upwards; microamp and nanoamp discharges aren't arcs. I'll have to read A. H. Howatson, An Introduction to Gas Discharges, Pergamon Press, Oxford, 1965 again this weekend. --Wtshymanski 20:37, 18 September 2007 (UTC)

Can someone include some science in this artical which discribes the physics as to how an electrical arc occurs? —Preceding unsigned comment added by (talk) 15:48, 10 March 2008 (UTC)

Removed paragraph for copyvio[edit]

Removed a paragraph from the Undesired arcing section. Copied from this source provided as a citation, which doesn't make it okay. I don't have a grasp of the material adequate to attempt a rewrite. Richigi (talk) 00:32, 30 March 2013 (UTC)

Lightning not an arc[edit]

Lightning IS NOT an arc discharge as your photograph states, it is an electrostatic discharge, a spark. Here is your own article.

Does anyone check this stuff? — Preceding unsigned comment added by Morzh (talkcontribs) 02:03, 1 October 2013 (UTC)