Douglas,+Dresden

=Motion Detectors= Dresden, Good list! I think bats and snakes have senses that we can just barely imagine! 5 stars! MW =Redefining the Kilogram= Dresden, Well I guess it will be the same old kilogram but it won't lose mass anymore. 5 stars. MW
 * The human eye is really just like a very complex camera, picking up the electrons in the air and chemically converted into an image that the nerves of the brain can read.
 * The analogy with the steel ball and one million ping pong balls was a great one. Despite the fact that they have the same mass, they do not have the same, compacted density at all.
 * It's strange to think of what a bat or snake "sees". Even though they do not use normal eyes to see colors and darkness, they are able to survive in nature with other senses of sound or infrared radiation.
 * It's interesting how important these kilograms are, to be locked up in vaults all throughout the world. It makes one wonder why someone would want to steal a golf-ball-sized hunk of metal in the first place.
 * The kilogram needs to stay constant, or else all the other standards of measurement that were based off it will waver and their accuracy thrown off drastically
 * Even if the kilogram is redefined through Avogrado's or Planck's constant formula, it'll still be the same kilogram.

=Crystal Art=

Not very many artists in the world are like Roger Hiorn. This man used his talent with visual arts and combined it with a new found knowledge in science. Using blue copper sulfate, he took an entire London studio apartment room and completely covered it in crystals; floors, walls, ceiling and all. As an artist, it was a risky move to make because he couldn't perfectly control how the natural crystals would form. But in the end, every crystal covering that apartment was beautiful, and the project was a success. When talking about the chemistry and science involved, he says, "This wasn't very scientific. We knew how to do this on a small scale in the studio, so we just made it a lot bigger." In essence, no matter what the ratio is, it's still chemistry...

Dresden, Good comments! I like the way you mention the combination of art and chemistry! 5 stars! MW Thanks! ~DD