Visible light

• What depends on the visible light wavelength?


  The different colours of the rainbow
• Which visible light wave has the longest wavelength?


  red
• What are the colours of the rainbow in order?

  Red, orange, yellow, green, blue, indigo and violet
• visible light

  
• Can visible light be used for communication?


  yes, through optical fibres (thin glass or plastic)
• Communication via visible light