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?
Bo Burnham: Inside
It's a beautiful day to stay inside
It's a beautiful day to stay inside
Went out to look for a reason to hide again
Well, well
Look who's inside again
Went out to look for a reason to hide againDon't wanna know
Is there anyone out there?
Or am I all alone?
It wouldn’t make a difference
Still, I don’t wanna know
I thought it’d be over by now
But I got a while to go
I’d give away the ending
But you don’t wanna kn-A little bit of everything all of the time
Could I interest you in everything all of the time?
A little bit of everything all of the time
Apathy's a tragedy, and boredom is a crime
Anything and everything all of the timeThat funny feeling
That unapparent summer air in early fall
The quiet comprehending of the ending of it all
There it is again
That funny feelingNow get inside
You say the ocean's rising like I give a shit
You say the whole world's ending, honey, it already did
You're not gonna slow it, Heaven knows you tried
Got it? Good, now get insideCome on in, the water's fine
Are you feeling nervous? Are you having fun?
It's almost over, it's just begun
Don't overthink this, look in my eye
Don't be scared, don't be shy
Come on in, the water's fineCall me up and tell me a joke
If I wake up in a house that's full of smoke
I'll panic, so call me up and tell me a joke
When I'm fully irrelevant and totally broken, damn it
Call me up and tell me a joke
Oh, shit
You're really joking at a time like this?