Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. scientific concepts
5. physical sciences concepts
6. physics concepts
7. [energy and related concepts]
8. energy
9. radiation (energy)
10. electromagnetic radiation

Anotations

Scope note:

High energy radiation (from some keV to 110 keV) with very short wavelengths (0.001 - 10 nm). X-rays were discovered by Wilhelm Conrad Röntgen in 1895. They can pass through materials, ionize gases, and expose photographic film. Widely used in medical diagnosis and treatment and in many analytical techniques.