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 _    _      ___     __   _    _    _     _____   
| || | ||   / _ \\  | || | || | || | ||  /  ___|| 
| || | ||  | / \ || | '--' || | || | || | // __   
| \\_/ ||  | \_/ || | .--. || | \\_/ || | \\_\ || 
 \____//    \___//  |_|| |_||  \____//   \____//  
  `---`     `---`   `-`  `-`    `---`     `---`

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Text this: Determination of hot-wire position from a solid wall in an opaque channel