A French stamp issued to commemorate the work of Sophie Germain

When a guitar string is plucked, we don’t see waves travelling along the string. This is because the ends are fixed. Instead, we see a standing-wave p(...)

Joseph Fourier helped solve many of the equations of physics.

Joseph Fourier, born just 250 years ago, introduced a wonderful idea that revolutionised science and mathematics: any function or signal can be broken(...)

Farmer Donald O'Reilly rescues a sheep trapped in a snow drift in the Aughafatten area of Co Antrim last week. Photograph:  Cathal McNaughton/Reuters

What a difference a year makes; a year ago Europe was basking in some of the warmest spring temperatures recorded. Last week all that seemed a very(...)