Researchers from the Physikalisch-Technische Bundesanstalt (PTB) have thoroughly analyzed the noise processes in their optical lattice clock with neutral strontium atoms. This analysis proves that their optical atomic clock ...
General Physics
Feb 10, 2016
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57
The interaction of thermal energy from the environment with motional degrees of freedom is well known and often referred to as Brownian motion (also thermal motion). But in the case of polar molecules, the internal degrees ...
Quantum Physics
Feb 8, 2016
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117
The movement of charge carriers perpendicular to an electric driving field – even without a magnetic field – constitutes one of the most intriguing properties of carriers in solids. This anomalous velocity is at the origin ...
General Physics
Dec 16, 2015
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9
Space holds numerous fascinating objects which we can only investigate by observing their radiation – even beyond the visible range. For space telescopes such as the European Space Agency's (ESA) infrared observatory Herschel, ...
General Physics
Nov 23, 2015
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10
Vector network analyzers (VNA) are among the most precise high-frequency measurement devices available today. Due to continuous development within the last decades VNAs are usable up to frequencies of 1 terahertz (1012 Hz) ...
General Physics
Nov 5, 2015
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16
Magnetic nanostructures – or rather: the interaction between charge, spin and current flow as a function of a temperature gradient in such structures – this is what the fast growing research area named "spin caloritronics" ...
General Physics
Oct 15, 2015
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17
A team of researchers from the Max Planck Institute for Nuclear Physics in Heidelberg, the Physikalisch-Technische Bundesanstalt in Braunschweig and the University of Aarhus in Denmark demonstrated for the first time Coulomb ...
General Physics
Mar 12, 2015
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33
In quantum optics, generating entangled and spatially separated photon pairs (e.g. for quantum cryptography) is already a reality. So far, it has, however, not been possible to demonstrate an analogous generation and spatial ...
Nanophysics
Dec 4, 2014
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0
Barely has the research aircraft HALO entered the kilometre-high clouds towering above the Brazilian rainforest than the researchers find themselves in a complete haze, but they can rely on the measuring instruments that ...
Earth Sciences
Dec 2, 2014
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0
Are the fundamental constants really constant? Recent investigations carried out at the Physikalisch-Technische Bundesanstalt (PTB) have shown that one essential fundamental constant – namely the mass ratio of protons to ...
General Physics
Nov 18, 2014
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