Randle,+Breaun

Today I read an article on motion sensors. I learned a lot about motion sensors however there were also some things that I did know. I knew that there were motion sensors that listened for sounds waves. However these are very sensitive and can be tedious to monitor. i also knew that some motion sensors have a light that protrudes out and when it is blocked the alarm is armed. Another thing that I knew is that some motion sensors are able to detect through glass. I did not know about motion sensors that check for body heat. I learned that the average temperature of human skin is measured at 33.9 degrees celcius. Another cool thing I learned was that our body temperature gives of a light wave legnth measured at 9-10 micrometers. I learned a lot and I am glad I read.

Breaun, Looks good but you should have read an article under Introduction to Chemistry!


 * DISTILLATION VIDEO**

This video was very insightful, I got a lot of new information. I learned that since some liquids boil at different temperature they can be separated using distillation. Since the liquids oil at different temperatures, the liquids with the lowest boiling points will rise first in the distillation, the temperature will stay the same until all liquids that boil at that temperature are gone. I as amazed at this and it really intrigued me. I think this information is relevant to this class because it shows how precise this technique is and how distillation manipulates liquid and its physical properties.

Breaun, Solid and well done. 5 stars. MW

Breaun,

OK. Now read one and post from the Intro to Chemistry selections! MW