Binoculars

device · 1854 · Industrial Revolution

A double telescope with prisms (Porro).

What it is made of

• Prism — has part. Porro prisms flip the image.
• Lens — has part. Objectives and eyepieces.

Principles and materials it uses

• Brass — is made of. The case is brass.
• Glass — is made of. The lenses and prisms are glass.

History: what it evolved from and what it influenced

• Telescope — evolved from. A double telescope.

Take Binoculars apart

Open Evothings