Friday, 7 March 2014

Postcard from the USA!

Today I got a nice postcard from the USA! The card shows a close-up view of a wave. Wind-generated waves are surface waves that occur on the free surface of bodies of water. Many factors affect these waves, including wind speed, water depth, the length of open water, and others. The card is an official Postcrossing card, US-2591842. Thanks Debby! 

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