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Black Opal from Lightning Ridge

Some guy engineers his own 9/11 experiments

jwray says...

Also crushed silicon dioxide or silicates in the wreckage (e.g. glass, granite, marble, concrete, and anything else consisting mostly of rock) could react violently with aluminum, in a very similar reaction to thermite. See http://webcache.googleusercontent.com/search?q=cache:fdBLS0oP0csJ:www.amazingrust.com/experiments/how_to/Thermite.html+silicon+dioxide+and+aluminum&cd
=6&hl=en&ct=clnk&gl=us&client=firefox-a&source=www.google.com

Edit: marble is carbonate, not silicate, but most rocks are silicates.

Aerogel: one of the coolest materials ever made

demon_ix says...

>> ^zombieater:
Yeah yeah, but is it biodegradable? Decades ago plastic was the "miracle material" and now it composes a great deal of our landfills, hardly any gets recycled, and we have plastic "dead zones" in the ocean because of over manufacturing.

Well, if the material is really Silicon Dioxide (SiO2, or Silica), then you use it every day already.

It's used in so many common items (glass, for example, is fused silica) that it's really not even remarkable anymore. Until new applications like this surface...

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