The Large Hadron Collider (LHC) is the world’s largest and highest-energy particle accelerator. It is expected that it will address themost fundamental questions of physics, advancing our understanding of the deepest laws of nature.
The LHC lies in a tunnel 27 kilometres (17 mi) in circumference, as much as 175 metres (574 ft) beneath the Franco-Swiss border nearGeneva, Switzerland. This synchrotron is designed to collide opposing particle beams of either protons at an energy of 7 teraelectronvolts(1.12 microjoules) per particle, or lead nuclei at an energy of 574 TeV (92.0 µJ) per nucleus. The term hadron refers to particles composed of quarks.
- Country: Switzerland
- Year of completion: 2008
- Cost: $6 Billion
The Øresund or Öresund Bridge is a combined twin-track railroad and four-lane highway bridge-tunnel across the Öresund strait. The Øresund Bridge connects Sweden and Denmark, and it is the longest highway and railroad bridge in Europe. The Øresund Bridge also connects two major Metropolitan Areas: those of the Danish capital city of Copenhagen and the major Swedish city of Malmö. Furthermore, the Øresund Bridge connects the highway network of Scandinavia with those of Central and Western Europe.
- Official name: Øresundsbroen, Öresundsbron
- Carries: Four lanes of European route E20 Double track Oresund Railway Line
- Locale: Copenhagen, Denmark and Malmö, Sweden
- Designer: Georg Rotne
- Design: Cable-stayed bridge
- Total length: 7,845 metres (25,738 ft)
- Width: 23.5 metres (77.1 ft)
- Longest span: 490 metres (1,608 ft)
- Cost: $6 Billion
- Country: Denmark, Sweden
- Year of completion: 2000
