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Materials
SyntheticGenerated with AI1 min read

Mirror

Mirror

Made of

glasssilvertin

A mirror is an object that reflects an image.

Description of what it is like

Usually a flat sheet of glass with a dark or metallic backing that creates a clear reflection.

Origin and where to find it

Minimum processing required

  • Polishing glass to a very flat surface.
  • Applying a thin layer of metal to one side.
  • Adding a protective backing paint.

Tools needed to work on it

  • Glass cutters.
  • Chemical baths for silvering.

Common forms of use

  • Plane Mirror: Standard flat mirror.
  • Curved Mirror: Concave or convex for focusing or spreading light.

Possible substitutes

  • Polished Metal plates (less efficient).
  • Still Water surface.

Limitations and common failures

  • Fragility: Easily broken.
  • Tarnishing: The reflective layer can corrode over time if not sealed.

Risks and safety

  • Sharp edges: Broken glass is extremely dangerous.

Properties

  • Reflective
  • Fragile
  • Flat

Used for

  • Reflecting light in **[Solar Cooker](/en/inventions/solar-cooker)**
  • Signaling with **[Heliograph](/en/inventions/heliograph)**
  • Optical instruments like **[Telescope](/en/inventions/telescope)**

Manufacturing / Process

Coating a sheet of glass with a reflective metal, typically silver or aluminum, through a process called silvering.