"Geometric incidence" refers to the relationship between two geometric shapes when they intersect at a certain angle or point. In physics and optics, it often refers to the angle at which light or other radiation hits a surface or passes through an object. The angle of incidence is an important concept in determining how light or radiation is reflected, refracted or absorbed.
This is a photograph taken of a laser installation in LaserLew's closet. The setup consists only of lasers, glass and mirrors. Single exposure (see metadata) made B/W in Photoshop Express (Android).
Setup Details:
Centerpiece consists of 2 glass bookends holding up a dielectric sheet of glass, whereupon 4 glass cubes are lined up sequentially by size, largest closest to the camera.
3 1-watt Laser Cubes were used to make the beams. 2 are making the 'grid' that start from bouncing off mirrors just off-scene in the upper right and left, and 1 is creating an upside down V shape, broken into 'dots' - this is reflecting off a triangular shaped mirror placed directly behind the centerpiece.
Not a render.
All mirrors are 1st surface mirrors salvaged from rear projection TVs.