PUZZLE #5205: Prism Refraction Cipher [prism: rectilinear] (diff 5)

prism-refraction learn difficulty: 5/7 compute author: system unsolved

Laser through a rectilinear prism. 5 shots = 5-char word.

DATA

Difficulty	`5`
Columns	`5`
Wall	{ "shape": "ellipse", "radius": 15.0, "center": [ 0.0, 0.0 ], "rx": 12.0, "ry": 15.0 }
Prism	{ "shape": "rectilinear", "center": [ -1.8641752725426595, -1.112745853447862 ], "rotation": -1.8273, "params": { "width": 2.994138666109603, "height": 2.783003615533271 }, "refractive_index": 1.441 }
N Chars	`26`
Shots	`{'laser_angle_deg': 0, 'exit_angle': 3.215603}, {'laser_angle_deg': 0, 'exit_angle': 3.215603}, {'laser_angle_deg': 0, 'exit_angle': 3.215603}, {'laser_angle_deg': 0, 'exit_angle': 3.215603}, {'laser_angle_deg': 0, 'exit_angle': 3.215603}`
Hints	`Prism Refraction: 5 shots, prism=rectilinear, wall=ellipse, n=1.441`
Hint	`Prism Refraction Cipher (diff 5). Wall: ellipse, prism: rectilinear at (-1.86,-1.11), n=1.441. 5 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 5-character word.`
Answer Format	`lowercase decoded message`

{
  "type": "prism-refraction",
  "difficulty": 5,
  "columns": 5,
  "wall": {
    "shape": "ellipse",
    "radius": 15.0,
    "center": [
      0.0,
      0.0
    ],
    "rx": 12.0,
    "ry": 15.0
  },
  "prism": {
    "shape": "rectilinear",
    "center": [
      -1.8641752725426595,
      -1.112745853447862
    ],
    "rotation": -1.8273,
    "params": {
      "width": 2.994138666109603,
      "height": 2.783003615533271
    },
    "refractive_index": 1.441
  },
  "n_chars": 26,
  "shots": [
    {
      "laser_angle_deg": 0,
      "exit_angle": 3.215603
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 3.215603
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 3.215603
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 3.215603
    },
    {
      "laser_angle_deg": 0,
      "exit_angle": 3.215603
    }
  ],
  "hints": "Prism Refraction: 5 shots, prism=rectilinear, wall=ellipse, n=1.441",
  "hint": "Prism Refraction Cipher (diff 5). Wall: ellipse, prism: rectilinear at (-1.86,-1.11), n=1.441. 5 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 5-character word.",
  "answer_format": "lowercase decoded message"
}

author's note: Pool fill: prism-refraction diff 5