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?
Upstream Color
The same material as the sun
I have to apologize. I was born with a disfigurement where my head is made of the same material as the sun. It makes it impossible for you to look directly at me. It has always been this way.
When it goes wrong
Kris: It's not my fault when it goes wrong.
Jeff: Yes it is.
Upstream Color Original Soundtrack
- Leaves Expanded May Be Prevailing Blue Mixed With Yellow Of The Sand
- I Used To Wonder At The Halo Of Light Around My Shadow And Would Fancy Myself One Of The Elect
- Fearing That They Would Be Light-headed For Want Of Food And Also Sleep
- Stirring Them Up As The Keeper Of A Menagerie His Wild Beasts
- The Finest Qualities Of Our Nature Like The Bloom On Fruits Can Be Preserved
- Perhaps The Wildest Sound That Is Ever Heard Here Making The Woods Ring Far And Wide
- I Love To Be Alone
- A Young Forest Growing Up Under Your Meadows
- Their Roots Reaching Quite Under The House
- The Rays Which Stream Through The Shutter Will Be No Longer Remembered When The Shutter Is Wholly Removed
- After Soaking Two Years And Then Lying High Six Months It Was Perfectly Sound Though Waterlogged Past Drying
- The Sun Is But A Morning Star
- A Low And Distant Sound Gradually Swelling And Increasing
- As If It Would Have A Universal And Memorable Ending
- A Sullen Rush And Roar