Ramsden circle
Optics
noun
The exit pupil of a telescope or microscope; the circle of least diameter of the bundle of rays leaving the eyepiece.
Origin
Late 19th century.
- recce
- recco
- recd
- recede
- recedence
- recedent
- receder
- receipt
- receiptable
- receipt book
- receiptless
- receiptor
- receivable
- receival
- receive
- received idea
- receivedness
- received pronunciation
- received standard
- Received Standard English
- receiver
- receiver general
- receiver of wreck
- receiver of wrecks
- receivership