Meaningness A Website by David Chapman meaningness.com The word “meaning” has two quite different meanings in English. It can refer to the meaning of symbols, such as words and road signs. This book is not about that kind of meaning. People also speak of “the meaning of life.” That is the sort of meaningness this book is about. So I apply “meaningness” only to the sorts of things one could describe as “deeply meaningful” or “pretty meaningless.” meaninglife
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