Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Disciplines (hierarchy name)
4. disciplines (concept)
5. [science and related disciplines]
6. science (modern discipline)
7. natural sciences
8. physical sciences
9. physics
10. optics
11. x-ray optics

Anotations

Scope note:

Optics using lenses comprising arrays of small hollow glass tubes that guide the x-rays to one small point. The array is tapered so that one end of the capillaries points at the x-ray source and the other at the sample.