Radiation important ppl

Question 1

German physicist, discovered X-radiation by accident in November 1895 while experimenting with cathode ray tubes.

Observed photographic plates glowing and the shadow of bones in his hand when exposed to “X-rays.”

Answer 1

Wilhelm Conrad von Roentgen (1845-1923)

Question 2

Awarded the Nobel Prize in Physics in 1901.

Answer 2

Wilhelm Conrad von Roentgen (1845-1923)

Question 3

German dentist, produced the first dental radiograph in January 1896 (less than two weeks after Roentgen’s announcement).

skin reddening from multiple exposures

Answer 3

Otto Walkhoff (1860-1934):

Question 4

Physicist, also took early dental x-rays in February 1896.

Achieved shorter exposure times (9 minutes for maxillary, 5 minutes for mandibular).

Answer 4

Walter Konig:

Question 5

One of the first dentists to expose a dental radiograph in the United States.

Innovator: invented the first surgical aspirator, hired female dental assistants (novel for the time).

Answer 5

Edmund Kells

Question 6

Tragically developed severe radiation damage to his hands from repeated exposure (fixing the beam using fluoroscopy on his own hands), leading to multiple amputations and eventually suicide due to depression.

His experience highlighted the dangers of x-radiation.

Answer 6

Edmund Kells

Question 7

Harvard-trained dentist and physician, considered the “Father of Radiation Biology.”

Answer 7

William Herbert Rollins (1852-1929):

Question 8

Documented radiation damage to his hands shortly after x-ray discovery.

Published papers recommending protection for x-ray workers (leaded glasses, enclosed x-ray tubes, shielding).

Answer 8

William Herbert Rollins (1852-1929):

Question 9

Engineer at General Electric.

Modified the x-ray tube for portability for WWI MASH units (1914-1918).

Answer 9

William David Coolidge:

Question 10

Developed the enclosed x-ray tube prototype around 1921-1923 (GE CDX x-ray tube).

Answer 10

William David Coolidge: