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The iridescent nacre inside a nautilus shell
The iridescent nacre inside a nautilus shell
Nacreous shell worked into a decorative object
Nacreous shell worked into a decorative object
Electron microscopy image of a fractured surface of nacre
Electron microscopy image of a fractured surface of nacre
Fossil nautiloid shell with original iridescent nacre in fossiliferous asphaltic limestone, Oklahoma. Dated to the late Middle Pennsylvanian, which ma
Fossil nautiloid shell with original iridescent nacre in fossiliferous asphaltic limestone, Oklahoma. Dated to the late Middle Pennsylvanian, which makes it by far the oldest deposit in the world with aragonitic nacreous shelly fossils.
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A black carbon fibre (used as a reinforcement component) compared to a human hair
A black carbon fibre (used as a reinforcement component) compared to a human hair
Concrete is a mixture of adhesive and aggregate, giving a robust, strong material that is very widely used.
Concrete is a mixture of adhesive and aggregate, giving a robust, strong material that is very widely used.
Plywood is used widely in construction
Plywood is used widely in construction
Composite sandwich structure panel used for testing at NASA
Composite sandwich structure panel used for testing at NASA