UnWettable: Water on a Bed of Nails

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As I have confessed freely on these pages over the (13) blog-years, I am easily delighted and amused, and also perplexed for that matter.

So in the details of bejeweled beading water drops on the local plant life I have previously expounded and gushed effusive. See More reading below.

Add to that delight a little science. Watch water drops bounce and either splatter into a shower of tiny round beads or coalesce into larger super-drops on an “unwettable” leaf surface. Why is that?

It is because the leaf is designed so that the water does not actually touch the leaf but rides on a “bed of nails” created by the leaf cuticle micro-structure.

Watch the three short videos at the following link. Then sit out in the rain and take in the dance of raindrops. The finest of details your eyes cannot see create diamond unwetness around you.

The Amazing Micro-Engineered, Water-Repelling Surface That Lives Outside My Window | WIRED

See More on this topic Fragments from Floyd

â–º Dry and Warm: No Easy Matter for Plucked Chickens | Fragments from Floyd

â–º Water Off a Duck’s Back, Botanically Speaking | Fragments from Floyd

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Fred First holds masters degrees in Vertebrate Zoology and physical therapy, and has been a biology teacher and physical therapist by profession. He moved to southwest Virginia in 1975 and to Floyd County in 1997. He maintains a daily photo-blog, broadcasts essays on the Roanoke NPR station, and contributes regular columns for the Floyd Press and Roanoke's Star Sentinel. His two non-fiction books, Slow Road Home and his recent What We Hold in Our Hands, celebrate the riches that we possess in our families and communities, our natural bounty, social capital and Appalachian cultures old and new. He has served on the Jacksonville Center Board of Directors and is newly active in the Sustain Floyd organization. He lives in northeastern Floyd County on the headwaters of the Roanoke River.

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  1. The two links to Fragments both led to Water Off A Duck’s Back. I am enjoying the natural science posts very much!