linkedin post 2020-11-30 05:46:37

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AQUEOUS CHEMISTRY. “Super-cooled liquid water is rarely pure water, foremost because it has itself nucleated heterogeneously on a cloud condensation nuclei. Hence, depending on their size, supercooled water droplets in the atmosphere tend to be solutions with differing degrees of concentration. The effect of the solute is to reduce the water activity.” http://www.mpimet.mpg.de/fileadmin/staff/stevensbjorn/teaching/skript-5.pdf View in LinkedIn
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linkedin post 2020-11-30 05:48:03

linkedin post 2020-11-30 05:48:03

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ICE TREE RINGS. “A snowflake’s final shape is a history lesson of how the thing grew. The outside edge of the crystal is where it grew last, and as you go inward you can tell [the conditions of] where it was before"...temperature also plays a major role in the forming of flakes...shapes vary according to temperature." http://www.pbs.org/newshour/rundown/the-science-of-snowflakes/ View in LinkedIn
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linkedin post 2020-11-30 05:49:29

linkedin post 2020-11-30 05:49:29

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SNOWFLAKE MORPHS. “Thin plates and stars grow around -2 C (28 F), while columns and slender needles appear near -5 C (23 F). Plates and stars again form near -15 C (5 F), and a combination of plates and columns are made around -30 C (-22 F).” http://www.pbs.org/newshour/rundown/the-science-of-snowflakes/ View in LinkedIn
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linkedin post 2020-11-30 05:50:27

linkedin post 2020-11-30 05:50:27

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SNOWFLAKE COMPLEXITY. “Snow crystals tend to form simpler shapes when the humidity (supersaturation) is low, while more complex shapes at higher humidities. The most extreme shapes — long needles around -5C and large, thin plates around -15C — form when the humidity is especially high." http://www.pbs.org/newshour/rundown/the-science-of-snowflakes/ View in LinkedIn
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linkedin post 2020-11-30 05:52:02

linkedin post 2020-11-30 05:52:02

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NONE IDENTICAL. “So is it really true that no two snowflakes are alike? "It’s like shuffling a deck and getting the exact same shuffle for 52 cards. You could shuffle every second for the entire life of the universe, and you wouldn’t come close to getting two of the same.” http://www.pbs.org/newshour/rundown/the-science-of-snowflakes/ View in LinkedIn
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linkedin post 2020-12-01 05:35:19

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SPACE WEATHER is different from that on Earth. We have an ozone layer and geomagnetic currents and solar winds to protect us; and terrestrial conditions on Earth are so much less extreme than on other planets. This next section considers the space weather impact on earth, then the extremes of space weather and space conditions, followed by a section on extreme space chemistry. Look heavenwards and become untethered from our geocentric myopia. View in LinkedIn
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