White,+Kaitlyn

I read "Frankincense and Myrrh" article and I think it is very interesting. I was brought up in a roman catholic church so it is a big part of my religion. I've always known the significance it has in religion, but I never knew where it came from or stopped to think about it quite honestly. The fact that it could have medicinal benefits is incredible, but the fact that frankincense could possibly cause a depressed and anxious feeling shocks me. In my church we use incense a lot on special occasions. I never knew the effect it could possibly have on our emotions and feeling. I think it would be really interesting to keep going with the research and really figure out the effects it could have on humans.

Kaitlyn, That's cool that you were able to find something that relates to you. Well done! 5 stars. MW

Redefining the Kilogram This article was very interesting. I don't quite understand how the official kilogram "lost weight" but i guess it is possible. I never knew that they had actual, physical standards for different units of measurement. I just thought it was decided a long time ago and scales were made to know exactly what the measurements are. It's kind of surprising how much this tiny difference in the original, official kilogram has actually affected other parts of science. It even effects kids in chemistry classes because when they have to change Avogadro's constant, they might even have to change things in students chemistry books. I never realized how much of an impact something so small could have on the different aspects of chemistry and science.

Kaitlyn, Yes the lost mas has caused quite a stir. :). It speaks to how important standards really are - although we don't often think about it. 5 stars! MW

Motion Detectors I never thought so much went into how a motion detector works. I never knew there were so many types of motion detectors. I think the way that the photo sensor works is really interesting. I didn't realize that different frequencies could actually push electrons around and that caused it to sense motion. Also, I think it is interesting how easy it is to connect certain concepts and techniques are so similar to how different animals sense motion. Maybe they got the ideas for these types of motion detectors from knowing how these animals sense things. Also, I always thought that the laser beams that protect stuff in movies were actually how they looked in real life too. I never realized that it was used in elevator doors and things like that, so I had no idea.

Kaitlyn, Those laser beam detectors used in movies are largely fictional. As you noted real ones use invisible IR beams. 5 stars. MW