imperial/US

use hyphen

use hyphen

no hyphen

Tripartite Employment Conditions Forum

Tri-University Meson Facility, Canada

Acronym doesn’t need spelling out for the CERN Courier

Test Storage Ring (at ISOLDE)

use hyphen

Unidentified Falling Object

not "underway"

United Nations Educational Scientific and Cultural Organization

Not "Unesco"

Acronym doesn’t need spelling out for the CERN Courier

All SI units are lower case when spelled out: metre (m), kilogram (kg), second (s), ampere (A), kelvin (K), candela (cd), mole (mol).

Note: The tesla is the SI-derived unit of magnetic flux density. It has a lower-case "t" when spelled out, though its symbol is an upper-case "T".

Spell them out on first mention, then use the symbol.

I weigh 75 kilograms. Last month I gained 4 kg after I stopped running 5 kilometres every morning.

Upper case when referring to our Universe, otherwise lower case 

Where it is useful to advertise a URL (in printed materials, for instance) use the following format: cern.ch/[sitename]

Example: cern.ch/writing-guidelines (note that this resolves to test-static-04.web.cern.ch, which is less easy for new users to remember).

Notes

use hyphen

use hyphen