PUZZLE #5202: Prism Refraction Cipher [prism: triangle] (diff 6)

prism-refraction learn difficulty: 6/7 compute author: system unsolved

Laser through a triangle prism. 7 shots = 7-char word.

DATA

Difficulty	`6`
Columns	`7`
Wall	{ "shape": "ellipse", "radius": 15.0, "center": [ 0.0, 0.0 ], "rx": 12.0, "ry": 15.0 }
Prism	{ "shape": "triangle", "center": [ 2.574152950897715, 1.4562166258450384 ], "rotation": 1.3368, "params": { "side": 2.9600001775883857 }, "refractive_index": 1.564 }
N Chars	`26`
Shots	`{'laser_angle_deg': 0, 'exit_angle': 4.848581}, {'laser_angle_deg': 0, 'exit_angle': 4.848581}, {'laser_angle_deg': 0, 'exit_angle': 4.848581}, {'laser_angle_deg': 0, 'exit_angle': 4.848581}, {'laser_angle_deg': 0, 'exit_angle': 4.848581}, {'laser_angle_deg': 0, 'exit_angle': 4.848581}, {'laser_angle_deg': 0, 'exit_angle': 4.848581}`
Hints	`Prism Refraction: 7 shots, prism=triangle, wall=ellipse, n=1.564`
Hint	`Prism Refraction Cipher (diff 6). Wall: ellipse, prism: triangle at (2.57,1.46), n=1.564. 7 laser shots, one per character. Trace each laser through the prism using Snell's law. The exit ray hits the wall at a character. Read them in order. Submit the 7-character word.`
Answer Format	`lowercase decoded message`

{
  "type": "prism-refraction",
  "difficulty": 6,
  "columns": 7,
  "wall": {
    "shape": "ellipse",
    "radius": 15.0,
    "center": [
      0.0,
      0.0
    ],
    "rx": 12.0,
    "ry": 15.0
  },
  "prism": {
    "shape": "triangle",
    "center": [
      2.574152950897715,
      1.4562166258450384
    ],
    "rotation": 1.3368,
    "params": {
      "side": 2.9600001775883857
    },
    "refractive_index": 1.564
  },
  "n_chars": 26,
  "shots": [
    {
      "laser_angle_deg": 0,
      "exit_angle": 4.848581
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 4.848581
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 4.848581
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 4.848581
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 4.848581
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 4.848581
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 4.848581
    }
  ],
  "hints": "Prism Refraction: 7 shots, prism=triangle, wall=ellipse, n=1.564",
  "hint": "Prism Refraction Cipher (diff 6). Wall: ellipse, prism: triangle at (2.57,1.46), n=1.564. 7 laser shots, one per character. Trace each laser through the prism using Snell's law. The exit ray hits the wall at a character. Read them in order. Submit the 7-character word.",
  "answer_format": "lowercase decoded message"
}

author's note: Pool fill: prism-refraction diff 6