News tagged with repulsive forces

Binding together repelling atoms

Basic chemistry tells us that a bond between atoms can form if it is energetically more favorable for the atoms to stick together than staying apart. This fundamentally requires an attractive force between ...

Jul 31, 2013
4.8 / 5 (6) 0

It's the fineness of the grind

The properties of nanomaterials could be easier to predict in future. Scientists from the Max Planck Institute for Intelligent Systems in Stuttgart have ground metal into continuously finer powders in steps ...

Jul 23, 2013
5 / 5 (7) 0 | with audio podcast

Long distance calls by sugar molecules

All our cells wear a coat of sugar molecules, so-called glycans. ETH Zurich and Empa researchers have now discovered that glycans rearrange water molecules over long distances. This may have an effect on ...

Jun 18, 2013
4.5 / 5 (4) 0 | with audio podcast

Quantum model helps solve mysteries of water

A research team from the National Physical Laboratory (NPL), the University of Edinburgh and IBM's TJ Watson Research Center has revealed a major breakthrough in the modelling of water that could shed light ...

Jun 04, 2013
4.8 / 5 (8) 3 | with audio podcast

Dark energy is real, say astronomers

(Phys.org)—Dark energy, a mysterious substance thought to be speeding up the expansion of the Universe is really there, according to a team of astronomers at the University of Portsmouth and LMU University ...

Sep 12, 2012
4.3 / 5 (42) 144 | with audio podcast

Raising the prospects for quantum levitation

More than half-a-century ago, the Dutch theoretical physicist Hendrik Casimir calculated that two mirrors placed facing each other in a vacuum would attract. The mysterious force arises from the energy of virtual particles ...

Apr 18, 2012
4.8 / 5 (11) 1

Cosmology in a Petri dish

Scientists have found that micron-size particles which are trapped at fluid interfaces exhibit a collective dynamic that is subject to seemingly unrelated governing laws. These laws show a smooth transitioning ...

Jan 26, 2012
4 / 5 (7) 4

Hunting for gaps

(PhysOrg.com) -- Researchers have developed a new model for the behavior of pedestrians and crowds. It can help to understand and prevent tragic crowd disasters, to develop better architectural designs and ...

Apr 19, 2011
4 / 5 (1) 0 | with audio podcast

Tangling the microscopic ladder

If a ladder had more than one rung at each step, it would look awkward and would be a bit dangerous to climb. Ladders in the microscopic world were thought to be similar in structure, having only one particle, ...

Dec 17, 2010
3 / 5 (1) 0