Informative Speech Outline

1426 Words3 Pages

Outline
Thesis Statement: The world is an exciting and scary place, but advancements in technology have made the world a little less scary through vaccinations, x-rays, and the discovery of DNA.
I. Introduction
A. Advancements
B. Discoveries in medicine
C. Modern medicine
1. Life span increased
II. Vaccinations
A. Vaccination history
1. Who discovered.
2. When discovered.
3. How discovered.
B. Vaccines lead to better
1. Better Health
III. X-rays
A. X-rays history
1. Who discovered.
2. When discovered.
3. How discovered.
B. X-rays become more advanced
1. How.
IV. DNA
A. History of DNA
1. Who discovered.
2. When discovered.
3. How discovered.
B. DNA leads too greater
1. What can we do now?
V. Conclusion

Heather Green …show more content…

A German physicist named Wilhelm Conrad Rontgen discovered x-rays in 1895 (Avery, para.1). Rontgen became interested in cathode rays (para.1). He began to test the effects of passing a high tension electrical current through a glass vacuum tube in order to observe what light emissions were generated (para. 5). Rontgen was in his laboratory, in complete darkness, and closed the switch on the conductor; he was surprised to see a glow emanating from a fluorescent screen about a meter from the apparatus (para.5). Avery states that, “Rontgen quickly proceeded to test the power of the rays to penetrate solid objects – paper, wood, metals -and found that only lead seemed to stop the rays completely” (para.5). Avery also states that, “Then, as he held a small disk of lead in between the tube and the screen, what occurred was nothing less than the (Gothicised) birth of medical imaging” (para,6). Avery explains “For along with the outline of the disk on the screen there appeared the outline of Rontgen’s thumb and finger, and within the darker area he saw the outline of the bones of his hand” (para.6). Avery says,“As W. Robert Nitske suggests, Rontgen was suddenly exposed to ‘his own skeleton still encased in live tissue, his finger casting long ghostly black shadows’” (para.6). Rontgen started working with photographic plates in order to produce permanent records of what he saw (para.9). The first successful x-ray image was of Rontgen’s wife’s hand (para.9). X-ray equipment was really cheap, and they were very easy to perform (para.9). X-rays have come a long since being discovered. X-rays can now detect broken bones, fractures and even diseases like tumors or cancer. X-ray equipment has also had advanced in different ways. There are now many different types of x-rays like digital imaging and magnetic resonance imaging. After the discovery of x-rays came

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