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Wikipedia:Featured picture candidates/Mercury switch

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Voting period is over. Please don't add any new votes. Voting period ends on 17 May 2023 at 19:04:01 (UTC)

Original – A single-pole single-throw (SPST) mercury switch, the simplest type of an on/off switch, depicted on a millimeter graph paper. Device length is approximately 1.5 cm.
Reason
Quality image of a mercury switch. Good depiction and complements the lead sentence of the article: "... an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit."
Articles in which this image appears
Mercury switch, Mercury (element)
FP category for this image
Wikipedia:Featured pictures/Engineering and technology/Electronics
Creator
Medvedev
I deduced the size from the background. I am pretty sure the contamination is from the de-plating (wicking) of the electrodes. It shows the switch has been used. Bammesk (talk) 20:57, 7 May 2023 (UTC)[reply]
It isn't a damaged specimen. It is used. Bammesk (talk) 12:51, 14 May 2023 (UTC)[reply]
The ones that I have owned didn't look like this even after being used... --Janke | Talk 19:24, 14 May 2023 (UTC)[reply]
Ok but that doesn't mean the nominated specimen is damaged. It is just used. Electricity, materials, operating conditions, etc .... lots of factors. Not all apples are red! so to speak! Bammesk (talk) 00:21, 15 May 2023 (UTC)[reply]

Promoted File:Mercury Switch without housing.jpg --Armbrust The Homunculus 19:07, 17 May 2023 (UTC)[reply]