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1.
Ultraviolet corona discharges on treetops during storms (news.ycombinator.com)
2026-04-22 | get UV Storm Safety Light → | tags: corona discharges, ultraviolet, penn state
2.
Ultraviolet corona discharges on treetops (news.ycombinator.com)
2026-04-22 | get UV LED Flashlight → | tags: corona discharges, ultraviolet, penn state
3.
Treetops glowing during storms captured on film for first time (news.ycombinator.com)
2026-04-22 | get Storm Light Projector → | tags: treetops, corona discharges, penn state
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