Ions, not particles, make silver toxic to bacteria

(Phys.org) -- Rice University researchers have settled a long-standing controversy over the mechanism by which silver nanoparticles, the most widely used nanomaterial in the world, kill bacteria.

New detector design improves gamma-ray measurements

(Phys.org) -- In the pursuit of precision measurements, nothing is simple, even when the apparatus employed appears to be utterly uncomplicated. An instructive case in point is the new ionization chamber used to determine ...

Clocking the mosh pit of interstellar space

(PhysOrg.com) -- The space between the stars in the Milky Way and all other galaxies is full of dust and gas, the raw materials from which stars and planets are made.

New discovery sheds light on the ecosystem of young galaxies

(PhysOrg.com) -- A team of scientists, led by Michael Rauch from the Carnegie Observatories, has discovered a distant galaxy that may help elucidate two fundamental questions of galaxy formation: How galaxies take in matter ...

Fusion diagnostic sheds light on plasma behavior at EAST

An instrument developed by researchers at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) has enabled a team at the EAST fusion experiment in China to observe--in startling detail--how a particular ...

Disruption of giant molecular clouds by massive star clusters

(PhysOrg.com) -- New computer simulations show that the light from massive stars is, by itself, enough to blow apart the nebula where the stars are born. While this 'radiation pressure' was by and large overlooked in the ...

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