Roentgen shielded the tube with heavy black paper, and found that a green colored fluorescent light could be seen coming from a screen setting a few feet away from the tube.
He realized that he had produced a previously unknown "invisible light," or ray, that was being emitted from the tube; a ray that was capable of passing through the heavy paper covering the tube.
In his discovery Roentgen found that the X-ray would pass through the tissue of humans leaving the bones and metals visible.
One of Roentgens first experiments late in 1895 was a film of his wife Bertha's hand with a ring on her finger (shown below on right).
The news of Roentgens discovery spread quickly throughout the world.
Scientists everywhere could duplicate his experiment because the cathode tube was very well known during this period.
He was working with tubes similar to our fluorescent light bulbs.
Roentgen was working with a cathode ray tube in his laboratory.
He evacuated the tube of all air, filled it with a special gas, and passed a high electric voltage through it.
When he did this, the tube would produce a fluorescent glow.
In early 1896, X-rays were being utilized clinically in the United States for such things as bone fractures and gun shot wounds.
To answer your question from the information you’ve given me… From what you told me, my read on what you’re trying to figure out is one of three scenarios: a) you want to know that he likes you because knowing someone likes you feels good, b) he is indifferent to you (in the romantic sense), but you and you’re seeing what you want to see, c) you don’t know whether or not he likes you, but you’d be open to starting something with him.
I’m going to go with the assumption that you like him, mainly because if you didn’t, you wouldn’t have asked.