Talk:Scanning Kelvin probe

A fact from Scanning Kelvin probe appeared on Wikipedia's Main Page in the Did you know column on 20 June 2019 (check views). The text of the entry was as follows:

Did you know... that Scanning Kelvin Probe, a technique based on Lord Kelvin's work, has been used to investigate fingerprints and meteorites?

A record of the entry may be seen at Wikipedia:Recent additions/2019/June. The nomination discussion and review may be seen at Template:Did you know nominations/Scanning Kelvin Probe.

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x,y plane

What does "x,y plane" in the lead signify? No coordinate system has been introduced. Is it technical lingo for horizontal plane?--Nø (talk) 06:51, 20 June 2019 (UTC)[reply]

This still needs to addressed! Also, image caption has "x,y,z axis" that makes little sense on its own.--Nø (talk) 17:36, 13 December 2019 (UTC)[reply]