Issues
Readers’ Forum
Search and Discovery
Scintillator yields glimpse of elusive solar neutrinos
The low-energy neutrinos are byproducts of the first reaction in a chain that generates 99% of the Sun’s energy.
Europa may host a system of tectonic plates
Investigating Jupiter’s enigmatic moon requires revisiting images more than a decade old. A new result suggests they haven’t yet given up all their secrets.
Quantized vortices in a nanodroplet
Diffraction experiments reveal hidden order inside a spinning superfluid.
Collaboration unlocks self-replicating crack patterns
A novel fracture mechanism sets new limits for thin-film stability.
Issues and Events
Physicists offer a different approach to cancer research
Quantitative methods and modeling complement the work of biologists and oncologists. But US money for innovative centers supporting that research has run out.
Bridging academia and industry the Fraunhofer way
Winning contracts and sending products to market are the measures of success in the German organization’s not-for-profit research model.
Imaging Earth daily to help humanity
Commercial uses of tiny satellites may realize the 1990s NASA mantra “faster, better, cheaper.”
Articles
Making the Moon
It’s likely that our Moon emerged from a giant collision between Earth and a body the size of Mars. But getting that story, or any other, to fully square with the evidence has proven difficult.
Cracking mud, freezing dirt, and breaking rocks
The crack patterns in dried mud, permafrost, and lava columns exhibit subtle variations on simple physics.
The conceptual origins of Maxwell’s equations and gauge theory
Already in Faraday’s electrotonic state and Maxwell’s vector potential, gauge freedom was an unavoidable presence. Converting that presence to the symmetry principle that underpins our successful standard model is a story worth telling.
Books
New Products
Obituaries
George Dionisios Dracoulis
Ivan Paul Kaminow
John Gordon King
Bruno Zumino
Quick Study
Squeezing quantum noise
You can’t beat the Heisenberg uncertainty principle, but you can engineer systems so that most of the uncertainty is in the variable of your choice. Doing so can improve the precision of delicate measurements.