Sunday, January 30, 2011
Monday, August 9, 2010
Fulgurite=Petrified LightNing=Glass
On Occasion, Lightning will strike an outcropping of rock (or other hard material like concrete). When this happens, the lightning will melt a channel through the rock, creating a "rock fulgurite". Rock fulgurites are a part of the surrounding material, and trace the exact path the lightning took as it passed through the material. The heat of the lightning is sufficient to change the material as the bolt passes through it, leaving a kind of "fossil" behind.
Let's start with an interesting fact: A typical cloud-to-ground lightning bolt is hot. Very hot. The air surrounding a lightning stroke is superheated plasma, which can be anywhere between 30,000 and 50,000 degrees Fahrenheit. By way of comparison, the outer layer of the sun is around 11,000 degrees Fahrenheit.
Worldwide, there are about six thousand lightning flashes per minute. Not all these flashes are cloud-to-ground strokes, but even so, that's a lot of lightning strikes every minute.
Some of these lightning bolts hit sand. Sand is primarily silicon dioxide, SiO2. When sand is heated above about 900 degrees Fahrenheit or so, it melts and fuses into an amorphous solid that you're probably familiar with; in this form, it's called "glass."
When lightning meets sand, all the energy in the lightning bolt spreads out, melting it into glass as it goes. The result is a formation called a "fulgurite," a brittle glass tube that traces the pattern of the lightning in the sand.
CSI MiamI
Saturday, July 24, 2010
CHERUB ROCK
and Give IN
Doesn't matter what
you believe in
Stay COOL
and be somebody's
fool this year
cause they know
who is righteous
what is BOLD
so I'm told
who wants Honey
as long as there's
some money
who wants that honey?
hipsters unite
come align for you
but beware
all those ANGELS with
there wings glued on
we are frightened and we are scared
if you don't stare who wants honey
as long as there some money
who wants that honeyyyyyyyy
>>> LET me OUT
tell me all of your secrets
cannot help but believe this is true
tell me all of your secrets
I know, I know, I know
should have listened when I was told
who wants honey as long as there is some money
who wants that honey
CHERUB ROCK