I am an explorer A Quote by C.S. Lewis www.chipswritinglessons.com I do not sit down at my desk to put into in verse something that is already clear in my mind. If it were clear in my mind I would have no incentive or need to write about it. I am an explorer…We do not write in order to be understood, we write in order to understand. writingunderstanding
Caustic (optics) Caustics made by the surface of water. In optics, a caustic 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. Wikipedia en.wikipedia.org Architectural CausticsCaustic Engineering caustics