Observing and Recording – caustic-(optics)

Posted: October 26, 2017 in art,John_Dyess
Tags: , , , , , , , ,
Reflections-and-Refractions-1-31-12

In optics, a caustic or caustic network is the envelope of light rays reflected or refracted by a curved surface or object, or the projection of that envelope of rays on another surface. The caustic is a curve or surface to which each of the light rays is tangent, defining a boundary of an envelope of rays as a curve of concentrated light. A common situation where caustics are visible is when light shines on a drinking glass. The glass casts a shadow, but also produces a curved region of bright light. I’ve been taking photographs of light, shadow and caustic optics for many years.This is a photo that I took in 2012 ,which was before I knew the name caustic.

 

 

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