The tethered balloon, which is located in the Parc Andre Citroën, in Paris’s 15th arrondissement, uses an innovative lighting system to provide real-time reports on atmospheric pollution.
The balloon displays the quantity of the three most harmful contaminants (nitrogen dioxide, ozone and particles) found in the atmosphere, using an easy-to-understand colour coding – red for highly polluted air, orange for polluted, yellow for moderate, light green for clean and green for very clean.
In Paris, data is collected at several spots throughout the city by sensors set up by Airparif, an organisation monitoring French air quality. The data used complies with the new European Union air-pollution index developed for the CITEAIR project, which is currently used by about 30 large cities.
The balloon displays two measurements of air quality using Airparif’s data. Firstly, the ambient air quality is indicated by the colour of the balloon, using three projectors that are located upon the envelope’s equatorial plane, providing good night-time visibility. Secondly, air quality near major traffic junctions is indicated using a high-power rotating laser beam that sweeps the lower half of the envelope.
The Paris Aérophile balloon is filled with 6,000 cubic metres of helium and is tethered to the ground with a movable cable controlled by a hydroelectric winch. The environmentally friendly design is based on the Archimedes principle, and can lift up to 30 passengers (about 2.5 tonnes), without any noise or shaking, to an altitude of 150 metres above the city.
Waste in the water – New purification techniques for healthier aquatic ecosystems
24.07.2018 | Eberhard Karls Universität Tübingen
Plenty of habitat for bears in Europe
24.07.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
20.08.2018 | Information Technology
20.08.2018 | Life Sciences
20.08.2018 | Information Technology