Sand grains under the microscope
Did you know that grains of sand are rounded by the action of the wind, which causes abrasion by blowing the sand particles against each other and surrounding obstacles. Once a grain reaches an almost perfectly spherical shape, it may keep that shape without further wear for millions of years.
orange sand grains
yellow sand grains
Have you ever seen a red sand?
3 comments:
Kuya Bay nasaan na ang collections mo ng mga buhangin?
Dito lang! You want to see them again?
I am asking a friend who is now Abha-based to send me a handful of white sand. They say, very white raw ang sand 'don.
Very nice post!
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