Wikipedia:Featured picture candidates/Quadrupole ion trap

Quadrupole ion trap
Voting period ends on 18 Oct 2022  at 15:35:43 (UTC)
 * Reason:This shows flour grains levitated in a quadrupole ion trap. Science subjects are hard to depict. This brings attention to the subject, and as FPC instructions say: "to the point where users will want to read its accompanying article" (I hope). Not a high pixel count but meets the FP requirement.
 * Articles in which this image appears:Quadrupole ion trap
 * FP category for this image:Featured pictures/Sciences/Others
 * Creator:Jan Pavelka


 * Support as nominator – Bammesk (talk) 15:35, 8 October 2022 (UTC)
 * I think it's somewhat important to ask: Is the green light functional in some way? Because the ion trap works with rapidly changing electrical fields. If the light's part of the device, then of course I'd support. If it's just being used to make it look "science-y", though, I can't. Adam Cuerden (talk)Has about 8.1% of all FPs 05:18, 9 October 2022 (UTC)
 * Neither. It's not part of the electric field (which is radio frequency per article, and invisible), and it's not there to make it science-y. It's there (perhaps at both ends) to illuminate the trap space and the trapped particles, to make them visible. The particles are almost microscopic. That's what the device is designed for, ionized/charged particles, i.e. very small. It will be hard to see much there with room lighting, camera flash and such. Bammesk (talk) 14:22, 9 October 2022 (UTC)
 * That's functional, then. Support Adam Cuerden (talk)Has about 8.1% of all FPs 17:06, 9 October 2022 (UTC)


 * Support. There appears to be pretty significant subject motion blur on the trapped grains, but I think that serves an encyclopedic purpose, to show their motion within the trap rather than conveying the impression that it freezes everything in place. —David Eppstein (talk) 05:51, 13 October 2022 (UTC)
 * Yes the motion is part of its physics, and not an anomaly. Bammesk (talk) 03:45, 14 October 2022 (UTC)

--Armbrust The Homunculus 19:09, 18 October 2022 (UTC)
 * Nomination didn’t reach the necessary quorum for promotion. Armbrust The Homunculus 19:09, 18 October 2022 (UTC)