1. In 1888 Professor Roentgen was elected Chacellor of the University in Germany
2. Changes that have been made since his discovery
2.1. During the next decades it became obvious that x-rays caused injury to various human tissue and vision
2.1.1. At that time they did not tie in Radioactivity to x-rays
2.2. Many researchers developed radiation burns and cancer
2.2.1. More than 100 people died
2.2.1.1. Greater awareness of radiation hazards were made for health care workers
2.3. Early in the new century
2.3.1. X-ray equipment was being encased
2.3.1.1. Lead barriers and lead aprons were being introduced after the hazards became known
2.4. All this eventually led to a new branch of science
2.4.1. Radiobiology
2.5. Today
2.5.1. Computer tomography is used in medicine and material testing
2.6. Since 1960's
2.6.1. X-ray TV has enabled surgeons to monitor their operations
2.7. Mid 70's
2.7.1. Micro-electronics entered the field of radiography
2.8. Today
2.8.1. Botanists use computer tomography
2.8.1.1. To examine trees for disease
2.8.1.1.1. Archaeologists use them to examine
2.9. Today
2.9.1. Airport security
2.9.1.1. Use x-rays to detect an object of potential danger in luggage or on someone
2.10. June 1, 1990
2.10.1. X-ray sattellite
2.10.1.1. Was launched to explore the structure and the developements of planets and the stars
3. How he discovered X-Ray
3.1. Nov 8, 1895
3.1.1. He experimented with electric current flow
3.1.1.1. Using a spark conductor he generated high voltages in a partially evacuated glass tube
3.2. Tubeglow
3.2.1. Crystals of barium platino cyanide scattered on the table
3.2.1.1. It began to give off light when the tube glowed
3.3. He further tested with
3.3.1. Paper, wood, aliuminum and some other materials
3.3.1.1. These materials were transparent to these strange rays
3.4. Even at a distance of 2 meters
3.4.1. The rays were still penetrating a wooden door
3.4.1.1. He then realized he was dealing with invisible electro-magnetic rays
3.4.1.1.1. Which under certain conditions could stimulate certain materials to fluorescence
3.5. He found that lead glass
3.5.1. Is permeable to light but not to those rays
3.5.1.1. Wood stopped the light, but the rays passed through it
3.6. Then his thoughts turned toward bones
3.6.1. Bones seemed to screen the surrounding tissues
3.6.1.1. That monumental discovery enabled man to look inside the human body for the first time
3.7. He first called it phenomena X-rays
3.7.1. He published a paper about the discovery
3.7.1.1. In Dec 1895 he held a demonstration with his first x-ray pictures, along with one of his wife's hand
3.8. The discovery caused much excitement
3.8.1. In scientific and medical communities throughout the world
3.8.1.1. Scientist in many countries started to experiment with these new rays
3.8.1.1.1. Progressive Doctors very quickly used them as a diagnostic tool