Power to the constants!
On World Metrology Day, May 20, 2019, what defines a kilogram, an ampere and all the other units will change fundamentally.
International
The waltz of the LHC magnets has begun
Major endeavours have got underway in the Large Hadron Collider (LHC) over the past few weeks, with the extraction of magnets from the accelerator tunnel. The LHC has a total of 1232 dipoles, magnets which bend the particles’ trajectories, and 474 quadrupoles, which squeeze the bunches. All these magnets are superconducting, i.e. they operate at a temperature of -271°C, are 15 metres long and weigh up to 28 tonnes. So moving them around is no trivial matter.
Research news from Europe
