11. Some radiate only in visible light, others only in X rays and radio waves. 12. It was the first mineral that was discovered with the assistance of X rays . 13. The energies involved are comparable, and hence, a CRT tube in fact produces X rays . 14. X Ray examinations were made at the Bute Hospital.15. Also, the x rays will be contaminated with those coming from the electron conversion process. 16. This program has a wider target, because it includes laboratory materials like X ray film. 17. He later studied what effect did X rays and radium radiation have on the physiological action. 18. During a CT scan, x rays of the patient's brain are taken from many different directions. 19. Her chest X ray showed a large heart. 20. X rays marked black holes and solar flares.
