Discovery of X-rays

2. a radiation when an electrical charge is applied to two metal plates inside a glass tube filled with rarefied gas
4. one of the principal ways that radiation transfers its energy to matter
6. a terminal of the x-ray tube.
8. an image produced by X-rays
9. rays, bluish green light glow in the crookes tube
10. developed by thomas edison to perfect roentgen's discovery
11. tube, Roentgen was experimenting with this tube when he discovered the new invisible light
13. a naturally-occurring radioactive gas
15. radiation, consists of particles that have mass and energy

1. caused by invisible rays originating from the Crookes tube
3. tube, a beam of thermoelectrons is produced by heating a wire cathode.
5. tube, an early version of the cathode ray tubes used in older televisions and monitors
7. radiation, a form of energy that is all around us and with many forms
12. a powerful tool for physical experiments and examining the body’s interior
14. platinocyanide, a chemical that glowed in a piece of paper when the tube is covered with black cardboard