Saturday, January 14, 2006
In the news...
I saw some recent articles that you can now comprehend using your chem knowledge:
Solid Gold!:This article demonstrates the phemomena of photon absorption and emission by (gold) atoms in order to detect cancer! Recall that electrons in atoms absorb photons (energy packets) and go to higher energy sublevels and then emit photons as these electrons go to lower energy sublevels.
http://www.livescience.com/humanbiology/060113_gold_nanobars.html
Snowflakes: this article relates to our recent discussions on "hydrogen bonding (NOT A BOND!) attraaaaactions". The article talks about crystals (of water!), which are solids composed of particles arranged in a regular geometric pattern.
http://www.livescience.com/forcesofnature/060113_snowflake_stamps.html
Solid Gold!:This article demonstrates the phemomena of photon absorption and emission by (gold) atoms in order to detect cancer! Recall that electrons in atoms absorb photons (energy packets) and go to higher energy sublevels and then emit photons as these electrons go to lower energy sublevels.
http://www.livescience.com/humanbiology/060113_gold_nanobars.html
Snowflakes: this article relates to our recent discussions on "hydrogen bonding (NOT A BOND!) attraaaaactions". The article talks about crystals (of water!), which are solids composed of particles arranged in a regular geometric pattern.
http://www.livescience.com/forcesofnature/060113_snowflake_stamps.html