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?
Against an Increasingly User-Hostile Web
We are quietly replacing an open web that connects and empowers with one that restricts and commoditizes people. We need to stop it.
A fly in the spider's web
We're very good at talking about immersive experiences, personalized content, growth hacking, responsive strategy, user centered design, social media activation, retargeting, CMS and user experience. But behind all this jargon lurks the uncomfortable idea that we might be accomplices in the destruction of a platform that was meant to empower and bring people together; the possibility that we are instead building a machine that surveils, subverts, manipulates, overwhelms and exploits people.
It all comes down a simple but very dangerous shift: the major websites of today's web are not built for the visitor, but as means of using her. Our visitor has become a data point, a customer profile, a potential lead — a proverbial fly in the spider's web. In the guise of user-centered design, we're building an increasingly user-hostile web.
If you run a website
If you run a website and you put official share buttons on your website, use intrusive analytics platforms, serve ads through a third-party ad network or use pervasive cookies to share and sell data on your users, you're contributing to a user-hostile web. You're using free and open-source tools created by thousands of collaborators around the world, over an open web and in the spirit of sharing, to subvert users.
I chose out
What I'm against is the centralization of services; Facebook and Google are virtually everywhere today. Through share buttons, free services, mobile applications, login gateways and analytics, they are able to be present on virtually every website you visit. This gives them immense power and control. They get to unilaterally make decisions that affect our collective behavior, our expectations and our well-being. You're either with them or out. Well, I chose out.
You see, the web wasn't meant to be a gated community.
What do we want the web to be?
Do we want the web to be open, accessible, empowering and collaborative? Free, in the spirit of CERN’s decision in 1993 or the open source tools it's built on? Or do we want it to be just another means of endless consumption, where people become eyeballs, targets and profiles? Where companies use your data to control your behaviour and which enables a surveillance society—what do we want?