Why We Build the Wall A Song by Anaïs Mitchell genius.com What do we have that they should want? We have a wall to work upon We have work and they have none And our work is never done And the war is never won The enemy is poverty And the wall keeps out the enemy And we build the wall to keep us free That’s why we build the wall We build the wall to keep us free So that its destruction cannot begin workfreedomcapitalism
Architectural Caustics A Research Paper insightsaboutlightandglass.com Show image 0 Show image 1 Show image 2 To 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? Caustic EngineeringCaustic (optics) causticsoptics