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.
Oprah just bought a $14 million mansion in Colorado. Oprah Winfrey's empire just got even bigger â she just picked up an 8,700-square-foot mountain home in Telluride, Colorado. According to Zillow, she paid $14 million for the property, which previously belonged to tech executive Bob Wall. The home has five bedrooms and is packed with smart-home features.