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a 19th century iron lattice tower | by Of Silver and Silence
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a 19th century iron lattice tower

Camera + Lens : GF1 + VOIGTLANDER NOKTON CLASSIC S.C 35mm F1.4


I guess everyone who is just a "visitor" in Paris has to have a photo of La Tour Eiffel.



The metal structure of the Eiffel Tower weighs 7,300 tonnes while the entire structure including non-metal components is approximately 10,000 tonnes.


Depending on the ambient temperature, the top of the tower may shift away from the sun by up to 18 cm (7.1 in) because of thermal expansion of the metal on the side facing the sun.


As demonstration of the economy of design, if the 7300 tonnes of the metal structure were melted down it would fill the 125 metre square base to a depth of only 6 cm (2.36 in), assuming a density of the metal to be 7.8 tonnes per cubic metre.


The tower has a mass less than the mass of the air contained in a cylinder of the same dimensions,[23] that is 324 metres high and 88.3 metres in radius. The weight of the tower is 10,100 tonnes compared to 10,265 tonnes of air. -/- from Wikipedia

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Taken on February 22, 2010