Sloan,+Brian

Can Cell Phones Radiation Damage Our Brains?

Three things that I learned was that evening having your skin temperature go up by a fraction of a degree can cause the brain to have serious damage and maybe even form cancer! Another thing is that the FCC (Federal Communications Commission) set a limit on the amount of radiation that can be absorbed by our body. The last thing I learned was that the smaller the wavelength of a beam. The more energetic it is. Three things that I knew from this article is the weight of the average man is 200 pounds. I also knew that the body is exposed to radiation everyday by the sun. Being exposed to radiation is not bad if it is in small doses. The last that I already knew from this article was that if there is to much radiation exposed to living cells than they will et cancer and eventually die.

Brian, OK. Looks like you discovered some new things from the article. 5 stars.

9/19

Something that I learned is that crude oil is made into a lot of different materials. Like gasoline, propane and diesel. This happens when you apply heat to the crude oil. The hydro carbons in the oil are all different. They boil all at different temperatures. For example the propane boils at a cooler temp than gasoline. This process happens by distillation. This is when you filter rocks and other large particles of matter out of a liquid. Then you set up a big water boiler and get all of the other smaller items in the water that dissolved into the water out of it. Then what is left is pure clean water. This is how thee process of distillation occurs.

Brian,

As you can see it doesn't have to be water solutions that are distilled. 5 stars. MW

Motion Detecors

Knew

- I knew that motion detectors used infrared radiation. - I knew that when the beam is blocked the sensor will go off. - I knew that others used motion detection by them sending out radio waves and they get interrupted by a human they will go off. - I knew radiation came off from all warm blooded creatures that live on earth. - I knew bats send out sonar waves that are sort of like how motion detectors use infared radiation.

Learned

- I learned that photo sensors can be made to detect almost any kind of light. - I learned that all sensors rely on light's ability to initate an electrical current. - I learned that that pit vipers can see infared radiation with glands on the sides of their head - I learned that elevators use the beam method of radiation to keep from closing the doors on passangers. - I learned that motion detectors can see ultraviolet, visible, and infared light.

All the things that I learned about motion detectors really made me wonder what will come next in the future of motion detectors. Maybe we could have some motion detecors that use x-ray to locate people, but not hurt them.

Brian, I don't think people would like to be x-rayed but it's always good to ponder these things. 5 stars! MW