grazing incidence grating
11HEAO Program — The High Energy Astronomy Observatory Program was a NASA program of the late 1970s and early 1980s that included a series of three large low Earth orbiting spacecraft for X ray and Gamma Ray astronomy and Cosmic Ray investigations. After launch,… …
12Reflection (physics) — Reflection is the change in direction of a wave front at an between two different media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. Law of… …
Страницы
- 1
- 2
