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

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發送短信 : Patterns of light : chasing the spectrum from Aristotle to LEDs