fulgurite

Nov. 19th, 2012 10:17 pm
[identity profile] ersatz-read.livejournal.com posting in [community profile] 1word1day
fulgurite (flgy-rt), noun.  A hollow glass tube formed by a lightning strike.  Sometimes called "petrified lightning".

Fulgurites are most frequently found in sandy soil.  The heat of the lightning melts and fuses the soil, creating a glass-lined branching tube in the shape of the lightning's path. 
Many of the delicate branches might be damaged or lost when unearthing a fulgurite.  Supposedly, "man-made" fulgurites can be created using sandy soil, a length of rebar, and an approaching thunderstorm, but there are many cautions to consider before attempting such an experiment.

Etymology:  from Latin fulgur, lightning.  The earliest reference I've seen is from 1711 and mentions fulgurites found in Silesia (a historical region mostly in Poland).  Karl Gustav Fiedler is given credit for more detailed studies in the early 1800s.

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Date: 2012-11-21 01:21 am (UTC)
From: [identity profile] trouble166.livejournal.com
It is quite beautiful, and when I touch Fulgurite, it feels like there is residual lightning in it.
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