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 Congdonâs were known for their extravagant parties on the well groomed lawns at the Glensheen Mansion. Sadly, Chester spent only eight years in his home, passing away from a heart attack in 1916. His wife, Clara, and their children remained in the home for a period of time, but the upkeep was difficult.