X-rays and their uses. X-rays are one type of electromagnetic radiation. They are commonly used in hospitals to produce photographs of bones which can be checked for breaks or fractures. X-rays have the following properties: they can penetrate less dense matter such as skin and body tissue (but not bone)
The historic Glensheen Mansion, along London Road in Duluth MN, was built for Chester Congdon and his family. Chester Congdon went from being a school teacher in Wisconsin to being the wealthiest Minnesotan at the time of his death in 1916, worth 40 million dollars.
 Pretty Good Neighborhood . The Glen Eden neighborhood at the far southwestern end of Hayward is relatively typical of Hayward, except for the fact that it has a newer section filled with Mediterranean style homes.his section, built in the 1990s, is nice with red-tiled roofs and adobe walls. the rest of Glen Eden is pretty much made up of older Ranch style homes, like most of Hayward. The median home price in Glen Eden is $275K.