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View Diary: Kitchen Table Kibitzing: Bridal Veil Falls and Lake Serene (38 comments)

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  •  Cool (12+ / 0-)

    Could you uplift our general knowledge about why metals are .... well "metallic?

    I couldn't help but notice that one thing all these recent metals you've been showing us have in common is that they look "metal like."

    Ha! these are not the kinds of clues that slip by The HoundDog unnoticed palantir.

    And, I couldn't help but think that there must be some explanation having to due with the density of the outer  electron shells.

    Also, if the availability is just a few parts per million even in uranium ore does that mean to get that chunk you have a picture of there they had to shift through 333,333,333 times that amount of uranium or one third of a trillion that amount of regular earth even with a "perfect" "shifting" device?

    I presume that chunk must be the only one and must be pretty valuable? What happens if someone stole it? I'm just saying...

    Where do they keep it? Fort Know?

    Inquiring minds like to know these things palantir.

    Thanks for educating us.  

    Humor Alert! No statement from this UID is intended to be true, including this one. Comments and Posts intended for recreational purposes only. Unauthorized interpretations may lead to unexpected results. This waiver void where prohibited.

    by HoundDog on Fri May 16, 2014 at 05:59:40 PM PDT

    [ Parent ]

    •  The way I define "metal" (12+ / 0-)

      is usually synonymous with "electrical conductor". I divide the world into conductor, semiconductor, and insulator. If you're willing to accept that metal = electrical conductor, then the following will answer your question.

      Because of the "band structure" -- the way that the electrons pile up in a solid where a lot of atoms live closely to one another -- a conductor has some electrons that are free to move over the surface (mostly) of the material. That property is responsible for most of the properties we think of at "metallic."

      Thermal conductivity -- can heat move through a material -- is thought to be a metallic property, but any high quality crystal will carry heat. Even non-metallic crystals. So, thermal conductivity isn't as good a criteria for classifying metal vs. non-metal.

      Other folks classify an element as a metal by how it does chemistry. The "transition metals" use "d-orbital electrons" for their chemistry, mostly.

      Jargon enough for you? If you want a real explanation from me, I'll need a chalkboard...

      "It is useless to attempt to reason a man out of a thing he was never reasoned into." --Jonathan Swift

      by rb137 on Fri May 16, 2014 at 06:10:29 PM PDT

      [ Parent ]

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