If you are not the one who inserted the line, it is recommended to look for the insertion documentation record or device placement information, including xray results for tip confirmation to determine what kind of catheter it is.
Rutherford's gold foil experiment provided evidence that There is a dense, positively charged mass in the center of an atom Who provided evidence for the existence of a nucleus in an atom?
The Atom had been introduced by Democritus. Aristotle did not believe in the Atom Theory. Aristotle believed that all matter was made of The Four Elements which are Fire, Earth, Air, and Water. He did not have any proof to support his theory. The Atom Theory had no proof as well.