Reflecting telescope
device · 1668 · Early modern era
A telescope with a mirror instead of an objective lens (Newton).
Inventor: James Gregory.
What it is made of
- Mirror — has part. The primary mirror.
Principles and materials it uses
- Reflection of light — uses. A mirror causes no chromatic aberration.
- Bronze — is made of. Newton’s mirror was made of speculum metal.
History: what it evolved from and what it influenced
- Corpuscular and wave optics — evolved from. Newton built a reflector while explaining the chromatic aberration of lenses.
What it is a kind of
- Telescope — is a kind of. A telescope.
- Space telescope — includes. Hubble is a reflector.