Physics

NASA Television to Air Soyuz Landing Coverage Nov. 18

NASA Television will provide live coverage as three of the crew members on the International Space Station come back to Earth Sunday, Nov. 18.

New power generation technique: Hybrid nanomaterial converts light and thermal energy into electrical current

Researchers have created a hybrid nanomaterial that can be used to convert light and thermal energy into electrical current. The team built a prototype thermoelectric generator they hope can eventually produce milliwatts for use in devices such as self-powering sensors, low-power electronic devices and implantable biomedical micro-devices, they said.

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 one of two forms: a static cosmological constant that is homogenous over time and space, or a dynamical entity whose energy density changes in time and space. By examining data from a variety of experiments, scientists in a new study have developed a model that provides tantalizing hints that dark energy may be dynamic.

Surveying Earth's interior with atomic clocks

Ultraprecise portable atomic clocks are on the verge of a breakthrough. An international team lead by scientists from the University of Zurich shows that it may be possible to use the latest generation of atomic clocks to resolve structures within the Earth.

Bringing measuring accuracy to radical treatment

An international team of scientists has determined for the first time the absolute density of active substances called radicals found in a state of matter known as plasma, in a new study.

First noiseless single photon amplifier

Research physicists have demonstrated the first device capable of amplifying the information in a single particle of light without adding noise. The next step will be to build additional quantum teleportation into the experiment, which will make the noiseless amplifier more directly useful for long-distance communication.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/physics/~4/2gc... height="1" width="1"/>

CERN collider to become the world's fastest stopwatch?

Heavy ion collisions at CERN should be able to produce the shortest light pulses ever created, computer simulations demonstrate. The pulses are so short that they cannot even be measured by today's technological equipment.

Surveying Earth's interior with atomic clocks

Have you ever thought to use a clock to identify mineral deposits or concealed water resources within the Earth? Some scientists are convinced that ultraprecise portable atomic clocks will make this a reality in the next decade. The scientists argue that these atomic clocks have already reached the necessary degree of precision to be useful for geophysical surveying. They say that such clocks will provide the most direct measurement of the geoid – the Earth’s true physical form.

CERN collider to become the world's fastest stopwatch?

Heavy ion collisions at CERN should be able to produce the shortest light pulses ever created. This was demonstrated by computer simulations at the Vienna University of Technology. The pulses are so short that they cannot even be measured by today's technological equipment. Now, a method has been proposed to create the world's most precise stopwatch for the world's shortest light pulses, using a detector which is going to be installed at CERN in 2018.

Recipe for 'supercharging' atoms with X-ray laser

Researchers using a free-electron X-ray laser have found a way to strip most of the electrons from xenon atoms, creating a "supercharged," strongly positive state at energies previously thought too low.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/physics/~4/CWB... height="1" width="1"/>

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