Mondo Knows Facts

Modern mirrors rely on microscopic silver layers behind float glass

Spraying chemical silver film onto glass produces clear specular light reflection

Flat glass mirrors are produced by spraying a thin liquid layer of metallic silver or aluminium onto the rear surface of clear float glass. A protective backing paint is applied over the metal film to prevent oxidation and physical scratching, allowing smooth reflection of light rays.

Where this comes from

Encyclopaedia Britannica

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Tags: mirrors, glass, optics

Modern mirrors rely on microscopic silver layers behind float glass: the short answers

Where does this come from, and can I check it?
Spraying chemical silver film onto glass produces clear specular light reflection. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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