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?
Dear Microsoft
We realized a few years ago that the value of switching to Slack was so obvious and the advantages so overwhelming that every business would be using Slack, or “something just like it,” within the decade. It’s validating to see you’ve come around to the same way of thinking. And even though — being honest here — it’s a little scary, we know it will bring a better future forward faster.
However, all this is harder than it looks. So, as you set out to build “something just like it,” we want to give you some friendly advice.
It's not the features that matter
First, and most importantly, it’s not the features that matter. You’re not going to create something people really love by making a big list of Slack’s features and simply checking those boxes. The revolution that has led to millions of people flocking to Slack has been, and continues to be, driven by something much deeper.
Building a product that allows for significant improvements in how people communicate requires a degree of thoughtfulness and craftsmanship that is not common in the development of enterprise software. How far you go in helping companies truly transform to take advantage of this shift in working is even more important than the individual software features you are duplicating.
An open platform is essential
Second, an open platform is essential. Communication is just one part of what humans do on the job. The modern knowledge worker relies on dozens of different products for their daily work, and that number is constantly expanding. These critical business processes and workflows demand the best tools, regardless of vendor.
You've got to do this with love
Third, you’ve got to do this with love. You’ll need to take a radically different approach to supporting and partnering with customers to help them adjust to new and better ways of working.