Y mis diwethaf roedd 24 o athrawon Ffiseg o Gymru wedi ymweld â safle'r Peiriant Gwrthdaro Hadronau Mawr (Large Hadron Collider) ger Genefa i ddysgu mwy am y darganfyddiadau diweddaraf ym maes ffiseg ronynnol, fel rhan o'u Datblygiad Proffesiynol Parhaus.
Last month 24 physics teachers from all over Wales visited the site of the large hadron collider in Geneva to learn more about the latest discoveries in particle physics, as part of their Continuing Professional Development (CPD).