The Tory conference was a pseudo-sacred affair, with devotees paying homage in front of Thatcher’s old shrouds — and your reporter, initially barred, only need mention he’d once met her to gain access. But would she consider what was on offer a worthy legacy, asks ANDREW MURRAY

WHAT if you could capture light in a box? Lasers work on that very principle. Light is a wave and any colour is described by a particular wavelength. To trap light in a box, mirrors are used, with the dimensions specially chosen so that the light can reflect off the mirrors and “resonate” at its own wavelength.
Just like a musical instrument, these resonant waves reinforce each other. For a musical instrument, these reinforced waves come out as a sound wave making a note at a particular frequency, which is related to the wavelength.
In the case of a laser, light is trapped at a high intensity, again at a singular frequency related to the wavelength of the light. Some of the light is allowed to burst out of the container, seen as a laser beam.

High pressures squeeze and crush, but low pressures damage too. Losing the atom-level buzz that keeps us held safe in the balance of internal and external pressure releases dangerous storms, disorientation and pain, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT

What’s behind the stubborn gender gap in Stem disciplines ask ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT in their column Science and Society

While politicians condemned fascist bombing of Spanish civilians in 1937, they ignored identical RAF tactics across the colonies. Today’s aerial warfare continues this pattern of applying different moral standards based on geography and race, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT

The distinction between domestic and military drones is more theoretical than practical, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT