http://www.emfnews.org/store/<br />http://www.emfnews.org/productinfo.html<br /><br />Satellites make measurements indirectly by sensing electromagnetic radiation coming from the surfaces below. Because radiation can transport energy without a medium, it is the only way in which the earth interacts with the rest of the universe. Thus, electromagnetic radiation is the basis for remote sensing technology. <br /><br />The capabilities and limitations of remote sensing technology are best understood by knowing the properties of the electromagnetic spectrum.<br /><br />http://emfnews.org/Lifewave-Cellphone-Matrix-Shield-Test.html
