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Big Bang Theory Big Bang Theory - The Premise The Big Bang theory is an effort to explain what happened at the very beginning of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was something: our universe. The big bang theory is an effort to explain what happened during and after that moment.  According to the standard theory, our universe sprang into existence as "singularity" around 13.7 billion years ago. What is a "singularity" and where does it come from? Well, to be honest, we don't know for sure. Singularities are zones which defy our current understanding of physics. They are thought to exist at the core of "black holes." Black holes are areas of intense gravitational pressure. The pressure is thought to be so intense that finite matter is actually squished into infinite ...
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 WHAT IS NANOTECHNOLOGY  Adapted from Online Materials Available from Nanotechnology is the science and technology of small things – in particular, things that are less than 100nm in size. One nano-meter is 10-9 meters or about 3 atoms long. For comparison, a human hair is about 60-80,000 nanometers wide. Scientists have discovered that materials at small dimensions—small particles, thin films, etc—can have significantly different properties than the same materials at larger scale. There are thus endless possibilities for improved devices, structures, and materials if we can understand these differences, and learn how to control the assembly of small structures. There are many different views of precisely what is included in nanotechnology. In general, however, most agree that three things are important: 1. Small size, measured in 100s of manometers or less 2. Unique properties because of the small size 3. Control the structure and composition on the nm scale in order to...
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