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.
The construction of the great Glensheen Mansion began in 1905 and was completed in 1908. He chose the name Glensheen, meaning âshining glenâ, and was named for Chesterâs ancestral home in Surrey, England. The 39 room Jacobean mansion was the most affluent home in Duluth at the time, and is considered so today.