Operation
At 150 metres high, permanently inflated with 6000 cubic metres of helium, the balloon is attached to the ground by a cable controlled by a hydroelectric winch.
The "Air de Paris balloon" on ground is 32 metres (105 feet) tall, comparable to a 12-storey building. The envelope is 22 metres (72 feet) in diameter.
In partnership with AIRPARIF (an organisation that monitors air quality in France), this news balloon will change colour according to the ambient air quality in Paris (on a scale of green/good, orange/medium to red/poor). A separate indicator system using the same colour scale will inform the public of traffic pollution near the main traffic arteries.
Read more about this topic: Paris Balloon
Famous quotes containing the word operation:
“Waiting for the race to become official, he began to feel as if he had as much effect on the final outcome of the operation as a single piece of a jumbo jigsaw puzzle has to its predetermined final design. Only the addition of the missing fragments of the puzzle would reveal if the picture was as he guessed it would be.”
—Stanley Kubrick (b. 1928)
“You may read any quantity of books, and you may almost as ignorant as you were at starting, if you don’t have, at the back of your minds, the change for words in definite images which can only be acquired through the operation of your observing faculties on the phenomena of nature.”
—Thomas Henry Huxley (1825–95)
“An absolute can only be given in an intuition, while all the rest has to do with analysis. We call intuition here the sympathy by which one is transported into the interior of an object in order to coincide with what there is unique and consequently inexpressible in it. Analysis, on the contrary, is the operation which reduces the object to elements already known.”
—Henri Bergson (1859–1941)