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B Why water looks transparent while spray looks white?

  1. Aug 25, 2016 #1
    The water looks transparent, but when the water hit the stone, it looks as if it turns white? Why?
     
  2. jcsd
  3. Aug 26, 2016 #2

    A.T.

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    Gold Member

    More complex surface -> more diffuse reflection, refraction. Same with grinding transparent glass to white powder.
     
  4. Aug 26, 2016 #3

    Drakkith

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    Staff: Mentor

    What exactly is "spray" in this context?
     
  5. Aug 26, 2016 #4
    All those optical effects mentioned above. A bit like the same reason why a pair of corrective glasses works for one person and not for somebody else.
     
  6. Aug 27, 2016 #5
    I don't perceive this metaphor.
     
  7. Aug 27, 2016 #6
    "the spray" here just like the drop created when the water hits the stone. For example, the bottom of the waterfall is white while the top is transparent.
     
  8. Aug 27, 2016 #7

    Drakkith

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    Staff: Mentor

    Ah okay. I think A.T.'s answer is right. The huge number of droplets reflects and scatters the light in all directions, resulting in a white color instead of a transparent "sheet".
     
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