Jan G. Otterstrom F.

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When light hits water, it bends
velocity slows, refracted in deflection
ancient notion: “shade of scimitar”
umbra versa reversed shadow
adding trigonometry to geometry
later becoming differential calculus
simple events uncover hidden worlds
like refractive indices, altered waves
in propagation, changing ways we think
as thought curves about many of things.

© Jan G. Otterstrom F. August 3, 2014