caustics
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.
Hiding Images in Plain Sight
An Article by Matt FerraroI recently made a physical object that defies all intuition. It's a square of acrylic, smooth on both sides, totally transparent. A tiny window.
But it has the magic property that if you shine a flashlight on it, it forms an image.
Caustic Engineering
An Article by Geoff ManaughA piece of milled plexiglass acting as a projecting lens; via the Computer Graphics and Geometry Lab at the École Polytechnique Fédérale de Lausanne
New milling techniques applied to glass and plexiglass panels could be used to “create windows that are also cryptic projectors, summoning ghostly images from sunlight.”
[Pauly and Bompas] hope that the technique will be used in architectural design, to create windows that mould sunlight and throw images or patterns onto walls or floors,” which, if timed, milled, and manipulated just right, could produce a slowly animated sequence of images being projected by an otherwise empty window during different times of day.
Architectural Caustics
A Research PaperTo control the shape of a caustic pattern generated by a specular or refractive surface, we need to solve the inverse problem: how can we change the surface geometry, such that incident light is redirected to produce a desired caustic image?
On Taste
The only problem with Microsoft is they just have no taste. They have absolutely no taste, and what that means is — and I don’t mean that in a small way, I mean that in a big way — in the sense that they don’t think of original ideas, and they don’t bring much culture into their product. And you say “well why is that important?” Well, you know, proportionally spaced fonts come from typesetting and beautiful books, so that’s where one gets the idea. And if it weren’t for the Mac they would never have that in their products.
And so I guess I am saddened, not by Microsoft's success — I have no problem with their success. They have earned their success — I have a problem with the fact that they just make really third-rate products. Their products have no spirit to them, no spirit of enlightenment about them. They are very pedestrian. And the sad part is that most customers don’t have that spirit either. But the way that we’re going to ratchet up our species is to take the best and to spread it around to everybody so that everybody grows up with better things, and starts to understand the subtlety of these better things. And Microsoft is McDonald’s.
So that’s what saddens me — not that Microsoft has won, but that Microsoft’s products don’t display more insight and more creativity.