Trump’s escalation against Venezuela is about more than oil, it is about regaining control over the ‘natural’ zone of influence of the United States at a moment where its hegemony is slipping, argues VIJAY PRASHAD
A laser focus
Rox Middleton, Liam Shaw and Miriam Gauntlett look at the history of lasers, from cat toys to modelling the explosion of stars
A rainbow lights up the Edinburgh skyline during the Scottish premiere of Global Rainbow a laser art installation by Yvette Mattern, part of Burns and Beyond, Edinburgh's flagship Burns festival, March 24, 2021
Evidence suggests Lammy’s proposals would come at a high cost: reduced fairness, diminished trust and greater racial inequality in the criminal justice system, argue TARA LAI QUINLAN and KATHARINA KARCHER
From the workhouses of the 1840s to today’s market capitalism, A Christmas Carol remains a sharp critique of charity rationed by class, says KEITH FLETT
The argument for a “significant expansion” of nuclear power will deliver soaring electricity prices that condemn underserved communities to unending hardship and poverty, argues LINDA PENTZ GUNTER
The new plan sets out an uncompromising bid for global dominance, casting even allies as obstacles to be subdued, writes DIANE ABBOTT
As we approach the half-anniversary of the Grenfell tragedy, the community gathers to remember loved ones while grappling with mixed emotions surrounding the ongoing deconstruction of the tower and the hopeful plans for a memorial, writes EMMA DENT COAD
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.
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SIMON DUFF explores the latest offering of the Chinese artist in exile AI WEI WEI
It’s sunny times for the solar industry which is expected to continue to grow rapidly — but there are still major environmental issues with how solar cells are made, explain ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT
In advance of their performances in London BEN LUNN speaks to PETER PAUL KAINRATH, artistic director of Klangforum Wien