News tagged with energy density

Can dark energy be explained by symmetrons?

(Phys.org)—A field that permeates the universe and gives rise to a new force, or "fifth force," between massive objects may be a candidate for dark energy and an explanation for why the expansion of the ...

Jan 28, 2013 feature
4 / 5 (32) 60 | with audio podcast

Is dark energy static or dynamic?

(Phys.org)—While hypothesized dark energy can explain observations of the universe expanding at an accelerating rate, the specific properties of dark energy are still an enigma. Scientists think that dark energy could take ...

Nov 12, 2012 feature
4.5 / 5 (19) 48 | with audio podcast

Glass for battery electrodes

Today's lithium-ion batteries are good, but not good enough if our future energy system is to rely on electrical power. Chemists and materials scientists at ETH Zurich have developed a type of glass that ...

Jan 13, 2015
4.9 / 5 (15) 3