What does mathematics have to do with bell ringing?

An archaic 400-year old technology led to a craze that brought a branch of mathematics into being. But how does all that relate to bell-ringing?

Wed Dec 10 2014 - 15:04

Nasa timelapse captures moon setting into red and green auroras

Timelapse footage, shot from the International Space Station, has captured the moon setting among vibrant red and green auroras. Video: Reuters

Double Olympic medallist Daniel Wiffen discussed illness, partying and LA 2028 as he returned to his hometown of Magheralin. Video: Getty

White-tailed sea eagles continue to be reintroduced to Ireland thanks to a decades-long project from the National Parks and Wildlife Service.

Minister for Health, Stephen Donnelly, outlines a "radical" proposal to make prescriptions for common conditions available at pharmacies. Video: PA

A wildfire that started over the weekend in northern Athens continued to rage, prompting the evacuation of more suburbs. Video: Reuters