Tag archives: defence
By Matin Durrani
Earlier this month my colleague Hamish Johnston published a blog post about the 70th anniversary of the bombing of Hiroshima, in which he reported on a piece by the science historian Alex Wellerstein about whether that first use of a nuclear weapon for non-testing purposes was justified.
It’s a hugely contentious issue – some say that the Hiroshima and Nagasaki bombings brought to an end a conflict that might otherwise have dragged on much longer, while others claim that a detonation well away from built-up areas would have been a better deterrent. Either way, the Hiroshima anniversary served as a pertinent reminder of the long and controversial role that physicists have played in designing and creating nuclear weapons, from the Manhattan Project onswards.
However, there have been plenty of physicists who have opposed the development of nuclear arms, including the Bulletin of the Atomic Scientists, which was founded in 1945 by Manhattan Project scientists who “could not remain aloof to the consequences of their work”. Another anti-nuclear group is the UK-based Scientists for Global Responsibility, whose executive director Stuart Parkinson is a physicist. Last week it published a report calling for the UK government not to replace its submarine-based Trident nuclear deterrent.
Now, a group of 29 leading US scientists and engineers, including six Nobel laureates, has written a two-page letter to US President Barack Obama backing the deal that the US – along with China, France, Germany, Russia and the UK – has struck with Iran to limit its development of nuclear weapons and permit inspections in return for a lifting of economic sanctions.
By Margaret Harris at the APS March Meeting in Baltimore
In industry, the gap between making a scientific discovery and turning it into a practical product is often termed the “valley of death”. Many an idea that seemed promising in the laboratory has failed to become a real application for want of funding, industrial know-how or, usually, some combination of the two.
The Industrial Physics thread of this year’s APS March Meeting – which my colleague Louise Mayor and I are attending this week on behalf of Physics World – includes a number of talks about the “valley of death” problem, and the one that kicked off yesterday’s session really brought home the importance of addressing it. The speaker, Robert Colwell, directs the Microsystems Technology Office at the Defense Advanced Research Projects Agency. Better known by its acronym – DARPA – the agency is part of the US Department of Defense, and one of the products that physicists in Colwell’s office have developed is a “blast gauge” for soldiers deployed in Iraq and Afghanistan.