Jurgis Grube. Lightguide fiber bundles
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Editorial review · 85% confidenceRound-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 18-minute video from NSP FOTONIKA-LV: “Jurgis Grube. Lightguide fiber bundles”.
Video by NSP FOTONIKA-LV, played through YouTube's embedded player.