fuckyeahfluiddynamics: We can’t always see the flows around us, but that doesn’t mean they’re not th
fuckyeahfluiddynamics: We can’t always see the flows around us, but that doesn’t mean they’re not there. Audobon Photography Award winner Kathrin Swaboda waited for a cold morning to catch this spectacular photo of a red-winged blackbird’s song. In the morning chill, moisture from the bird’s breath condensed inside the vortex rings it emitted, giving us a glimpse of its sound. (Image credit: K. Swaboda; via Gizmodo; submitted by Joseph S and Stuart H) -- source link
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