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• 04:52 Popular

  How Small is an Atom?

  828 views / 0 likes - added 5 years ago

  The size of an atom is only a few angstroms at most - there are 10 billion angstroms in 1 meter. This video also goes the basic parts of an atom (protons, neutrons, and electrons) and why the traditional model of the atom is not correct. Electrons are unp

• 03:40 Popular

  The Mystifying Structures Hidden Within Earth’s Mantle

  967 views / 0 likes - added 4 years ago

  Over four decades have passed since researchers discovered two continent-sized blobs wrapped around Earth's core, and they're still trying to figure out what they are. Here's what they know so far. There’s a Subterranean Biosphere Hiding in the Earth’s Cr

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