stress-strain-deformation: 3 bars

Round-10 hunt: picked; channel-level screens (sellers/exam/re-upload/devotional/vendor/events) and provenance check passed; strict per-title check + final strict pass; oEmbed verified.

A 13-minute video from Mark Mattson: “stress-strain-deformation: 3 bars”.

Video by Mark Mattson, played through YouTube's embedded player.