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Free Snowflake Pattern Vector. Free Christmas Snowflake Vector. Winter Flat Frames. Merry christmas banner. Water molecules in the solid state, such as in ice and snow, form weak bonds called hydrogen bonds with one another. These ordered arrangements result in the symmetrical, hexagonal shape of the snowflake. During crystallization, the water molecules align themselves to maximize attractive forces and minimize repulsive forces.
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Consequently, water molecules arrange themselves in predetermined spaces and in a specific arrangement. Water molecules simply arrange themselves to fit the spaces and maintain symmetry. Yes and no. No two snowflakes are exactly identical, down to the precise number of water molecules, spin of electrons , isotope abundance of hydrogen and oxygen, etc.
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On the other hand, it is possible for two snowflakes to look exactly alike and any given snowflake probably has had a good match at some point in history. Since so many factors affect the structure of a snowflake and since a snowflake's structure is constantly changing in response to environmental conditions, it is improbable that anyone would see two identical snowflakes.
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The short answer is that snowflakes have so many light-reflecting surfaces they scatter the light into all of its colors, so snow appears white. The longer answer has to do with the way the human eye perceives color. Even though the light source might not be truly 'white' light e. Thus, even though sunlight is yellow and scattered light from snow is yellow, the brain sees snow as white because the whole picture received by the brain has a yellow tint that is automatically subtracted. Bailey, M.
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Journal of the Atmospheric Sciences. Klesius, M. National Geographic. ISSN Knight, C. Scientific American , vol. Smalley, I.
Share Flipboard Email. Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels.