Topic 1 - Radiation History

_____ is the energy carried by waves or streams of particles.

In 1933, Hisatuga Numata was the first to expose a panoramic radiograph.

In the late 1870’s, ______ discovered that cathode rays were streams of charged particles.

_______ experimented with a slit beam of radiography, intensifying screens and rotational techniques

_________ developed the first dental X-ray unit

In 1894, Philip Lenard discovered that cathode rays could penetrate a thin window of aluminum.

In ______, F. Gordon Fitzgerald introduced the long cone paralleling technique.

A beam of energy with the power to penetrate substances and record image shadows on photographic film is called

Which of these are uses of dental radiographs?

In _____, C. Edmund Kells exposed the first dental radiograph to a live person in the United States.

All of these are uses for dental radiographs except:

1896-1913: hand wrapped glass photographic plates were used for film. In 1913:

In 1838, Heinrich Geissler built the first vacuum tube. In 1870, ______ used the vacuum to study fluorescence.

Howard Riley Raper established the first college course in radiography for dental students

In 1904, Weston Price introduced the bisecting technique, and in 1925 Howard Riley Raper:

A picture on film/sensors produced by the passage of x-rays through an object or body

Frank VanWoert was known for:

A radiograph is also known as an X-ray.

In 1895, _____ was experimenting with vacuum tubes and fluorescent screens when he discovered the existence of x-rays

________ is high-energy radiation produced by the collision of a beam of electrons with a metal target in an X-ray tube

Radiology is the science/study of radiation as used in medicine

A ________ is a picture on film/sensors produced by the passage of X-rays through an object or body.

In 1896, ______ introduced the paralleling technique

Which two instances occurred in 1895?