perspective glass
A "perspective glass" refers to early optical instruments used for magnifying distant objects or images, significant in historical developments of telescopic technology.
🇺🇸 US Voice:
🇬🇧 UK Voice:
Definition
C2Optics
(historical, technical)An early form of a telescope used to view distant objects.
Example
- In the 17th century, a perspective glass was a valuable tool for astronomers.
C2Optics
(historical, technical)An instrument used historically to enlarge images of engraved prints or maps.
Example
- Cartographers used a perspective glass to study detailed maps.
Similar
Terms that have similar or relatively close meanings to "perspective glass":
field glassmultiplying glasswater glassglass childgarden glasswatch glassdistorting mirrorglass paintinghand glasscrown glasspony glass