• Categories

  • Most Popular Questions

  • Recently Viewed Questions

  • Recent Answers

    How To Make a Digita… on What does a frequency of 100 H…
    Daigrepont on Can an earthquake cause air tu…
    Benedict on How did God come into exi…
    joshua on How does the human body g…
    Ian on How did God come into exi…
  • Recent Questions

  • Blog Stats

    • 2,224,852 hits
  • Visitors since 11-3-08

    counter create hit
  • Terms and Conditions

  • Warning

    We are doing maintenance on this site, so some posts may disappear for a short time. Sorry. Normal service will soon be resumed...
  • Pages

  • March 2008
    M T W T F S S
    « Feb   Apr »
  • Archives

  • Meta

  • Advertisements

How is the water shiny?

How is the water shiny?
Ryan Parry from Swansea (Age 5-14)


One Response

  1. Light is quite good at penetrating water if it strikes the air/water surface at 90 degrees. A small amount is reflected to our eyes. So if we are on a boat in a very calm and deep lake, the water will look quite dark and not shiny.

    Alternatively, if the light strikes the surface at a very shallow angle then nearly 99% of the light will be reflected. So if we look at a rough sea with the sun low in the sky and very bright there will some surfaces on the waves where the incidence angle is shallow and we see a very bright sparkle. The same is true of rain drops on a car roof. At some part of the curve the angle is just right to reflect a lot of light and the drops look very bright and shiny.

    If you have polarising sun glasses, these are designed to minimise the reflections from water surfaces such as lakes and wet roads etc.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: