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.
How much is the biltmore estate worth? The Biltmore Mansion Estate is worth about 2.5-3.0 billion dollars today. Built at a cost of $5 million dollars between 1890 and 1895, and another $4 million to furnish it. Thâ¦is includes 4 acre footprint home, landscaping, and a total 128,000 acres of land. To do this today (2009 dollars), it would cost you $230 million dollars.