Read article: Au revoir, kilogram
Au revoir, kilogram
Robert P Crease witnesses one of the last inspections of the official SI kilogram standard
Read article: Au revoir, kilogram
Read article: Missed metric moment
Missed metric moment
Robert P Crease bemoans the US's failure to capitalize on an early opportunity to go metric
Read article: Condensate created in freefall
Condensate created in freefall
Experiment paves way for BECs in space
Read article: Plan for ‘nuclear clock’ unveiled
Plan for ‘nuclear clock’ unveiled
Solid-state system could be far simpler than atomic clocks
Read article: It’s high-NOON for five photons
It’s high-NOON for five photons
Entanglement technique could boost quantum metrology
Read article: New optical clock breaks accuracy record
New optical clock breaks accuracy record
Aluminium-ion device makes use of quantum logic
Read article: Your favourite units
Your favourite units
Robert P Crease explains the enduring popularity of non-SI units, including the ox-day, firkin and litre
Read article: Atomic spins measure ultracold temperatures
Atomic spins measure ultracold temperatures
New thermometer could work down to a few trillionths of a Kelvin
Read article: Seeing through the ‘two cultures’
Seeing through the ‘two cultures’
Matthew Jones on the inseparability of the arts and sciences in early 19th-century France
Read article: Nanoparticles sink or swim in sewage
Nanoparticles sink or swim in sewage
Neutron scattering could help make wastewater nanoparticle free
