Kunkel,+Adam

POST#1 //Examining Explosives//:

One thing that I knew already knew from this article is that low explosives release energy by slowly burning from one part to the next. Another thing I knew from the article is that terrorists are making improvised explosives that are hard to detect and scientists are testing them to understand their properties. I also knew that high explosives are used to kick-start nuclear weapons.

One thing I learned from the article is that high compound explosives detonate a shock wave that propagates at 5 to 10km per second. Another thing I learned was scientists are making new explosive compounds like LLM-105 that are stable but still highly explosive capabilities. I also learned that x-rays are used to look into firing chambers and watch a material as it detonates, to see what happens.

Adam, Nicely done. I can tell you found some interesting things. 5 stars! MW

POST #2 //Distillation of Oil// Something that I learned from the video is hydrocarbons in oil boil at different points and are used to make different fuels.

Something interesting from the video is that distillation is used on a massive scale in order to make different fuels by heating it then cooling on different levels.

Something relevant to class is distillation is used to make fuel from crude oil. Hydrocarbons are separated from each others by boiling temperatures, and then condense at different places.

Adam, OK. Looks like you got the info. 5 stars. MW

POST #3 //Motion Detectors// //﻿// Something I knew was some motion detectors use light source aimed at a photo sensor, and when and objest passes through it is blocked and motion is detected. Another thing I knew was other devices use sensors to moniter infared radiation coming off warm objects. I also knew that a photo sensot is anything that senses light by the capacity of electrons it pushes around.

I learned that the eye pushes around electrons in a cis-retinal molucule, twisting around a double bond and initiating chemical reactions. I also learned that the unit for light frequency was named for Heinrich Hertz, who first observed the photoelectric effect. Another thing I learned is when light of a certain energy is shined on a given surface, it can cause electrons to be ejected.

Adam, OK. I think you got the main points. Watch spelling! MW