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?
Just-in-time Design
There is a disconnect between product design and product engineering.
Finish designing as close to the end of a sprint as possible
The traditional process of delivering design, vs. delivering design just in time.
Designers are often working at least one sprint ahead of engineers. While one sprint might not seem like much of a lag, a typical product team learns a lot after the design hand-off. ...Instead of working ahead, we should finish designing as close to the end of a sprint as possible: just-in-time design.
Just-in-time manufacturing
Get embedded in the team. Designers should use sprint planning, grooming, standup, and retro as opportunities to provide design to — and receive feedback from — the rest of the team. Designs can take the form of written or verbal descriptions, not just wireframes and high-fidelity mockups.
Only design what’s needed. Use constant communication between engineering and product partners to understand what your collaborators will need next. Then, plan on delivering only what is needed, and nothing more. Use the agile process — grooming, planning, and retro — to find any shortfalls or excesses.
Avoid creating a backlog of designs. Designs don’t age well. In the time between finishing design and shipping code, it’s likely that you’ll learn something new that changes your understanding. If you’re producing more design than can be implemented, focus more on the quality of each design.