Entries - L

laboratory

Always lower case, even when referring to CERN.

Shortening to "lab" after the first mention is acceptable, but will depend on the tone of the article. 

style

Large Hadron Collider

Caps. Always spell out first time, with abbreviation in brackets. Use the abbreviation thereafter.

Experiments at the Large Hadron Collider (LHC) suggest...

Beware of tautologies: Don't use "The LHC machine" or "The LHC accelerator" as this is equivalent to saying "The Large Hadron Collider accelerator..." which doesn't mean anything (The LHC doesn't accelerate accelerators).

style

last or past?

Use "past" rather than "last" in constructions such as "In the past few weeks...". If they were the last few weeks, that would imply that the end of the world is nigh, and you should probably be at home with your family rather than writing for a CERN website :)

grammar

lepton

Adjective: leptonic

A subatomic particle which does not take part in the strong interaction.

Examples include the electron, muon and neutrino.

physics

less or fewer?

See fewer or less?

grammar

licence or license?

With a "c" when it's a noun; with an "s" when it's a verb. 

I always carry my driver's licence with me for identification.

The state of Florida has agreed to license the sale of firearms.

 

spelling

Linac

Short for linear accelerator. Capital L when referring to one of CERN's Linacs, otherwise lower case. Add a space and then a numeral when differentiating between CERN's linear accelerators. 

Linac 2 started up in 1978 as a successor to Linac 1. 

style

linear accelerator

A particle accelerator that accelerates particles in a straight line rather than in a circle. 

Shorten to Linac

style

links

Links should always be in the form:

<a href="link_url_here">Link text here</a>.

Never show the reader the URL, keep it within a word or sentence. 

So: 

For CERN's style guide, click here.

NOT

For CERN's style guide, click here: https://writing-guidelines.web.cern.ch

It may seem obvious, but check that the link is relevant, and always double-check links are working before publishing. 

style

log in

Don't use this construction. Use Sign in, sign out. 

style

logo

All official CERN websites should use the CERN logo, with the following conditions:

style

luminosity

The number of particles per unit area per time, multiplied by the opacity of the target (its impenetrability) to electromagnetic radiation.

Luminosity is measured in barns per second: b-1s-1

Luminosity is an important measure of the performance of a particle accelerator.

physics

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