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.
Hugh Hefner sells his personal home next to the Playboy mansion. Update: Hugh Hefner and his wife, Kimberley, have sold their personal residence, next to the Playboy mansion in Holmby Hills, for $18 million. It had been listed since early March at $27,995,000. The 7,300-square-foot English Manor-style house, built in 1929, has five bedrooms and seven bathrooms.