Material tech
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Fake Gold Bars with Tungsten Cores in Fort Knox? « Xenophilia (True Strange Stuff)
In theory, as density is 19.1g/cm3, which is approximately 70% denser than lead, uranium could be used as material of making fake coin. However, it is weakly radioactive and not as dense as gold, so it does not appear to be a practical method. Then people have discovered that tungsten is environmental-friendly, durable and hardness, the most important is that its density of 19.25g/cm3 is just about the same density as gold (19.3g/cm3), which bears the similar specific gravity.Tenacity, audacity, intuition, patience, a lot of talent and a little luck are healthy qualities for a young scientist. Jun Yao has them all.
National Science Foundation (NSF) Discoveries - Electronics Breakthrough Could Revolutionize Memory Chips - US National Science Foundation (NSF)
Chemistry truly does come to life through this collection of pictures, animations, and movies depicting chemical reactions and techniques. The Chemistry Comes Alive! collection includes hundreds of high quality movies and thousands of still pictures.
Electrochemical Series: Metal Trees - Silver Nitrate
Aerogel: See-Through, Strong as Steel & Ligher than Air | Designs & Ideas on Dornob
Despite its incredibly low density, aerogel is one of the most powerful materials on the planet. It can support thousands of times its own weight, block out intense heat, cold and sound – yet it is 1,000 times less dense than glass, nearly as transparent and is composed of %99.8 air. The lowest-density silica-based aerogels are even lighter than air.
Absolute and kinematic viscosity of air at temperatures ranging -40 - 1000 o C (-40 - 1500 o F) at standard atmospheric pressure - Imperial and SI Units
Material Properties
Cool ! I put it in "Material tech" ;-) Lots of great info on that site ! Probably link to it's other info links also ! by Mar 30