Re: Falsi video ?
Inviato da Paxtibi il 13/1/2007 12:34:17
wikipedia: Density
Density, or volumic mass (ISO 31), is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume. An object made from a comparatively dense material (such as iron) will have more mass than an equal-sized object made from some less dense substance (such as aluminium).
...
Steel: 7850 kg/m³
Aluminium: 2700 kg/m³
...
Note the low density of aluminium compared to most other metals. For this reason, aircraft are made of aluminium.
Density, or volumic mass (ISO 31), is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume. An object made from a comparatively dense material (such as iron) will have more mass than an equal-sized object made from some less dense substance (such as aluminium).
...
Steel: 7850 kg/m³
Aluminium: 2700 kg/m³
...
Note the low density of aluminium compared to most other metals. For this reason, aircraft are made of aluminium.
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