Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
The Calabash Nebula, pictured here — which has the technical name OH 231.8+04.2 — is a spectacular example of the death of a low-mass star like the sun. This…
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in…
Physicists want to use ultracold gases in space to measure the Earth’s gravitational field, to subject Einstein’s Equivalence Principle to an accurate test, and also to detect gravitational waves. The first flight in a sounding rocket made it now possible to test the necessary technologies and experimental steps required for measurements of this nature. In doing so, the group generated a Bose-Einstein condensate and was able to examine its properties in space for the first time. The research rocket MAIUS-1…
Barely wider than a strand of human DNA, magnetic nanoparticles — such as those made from iron and platinum atoms — are promising materials for…
Researchers at the University of Oldenburg have developed a flap for wind turbine generators which is mounted parallel to the main rotor blade and is considerably smaller in its size and mass than the main blade. The core piece of the invention is the adjustable pitch of the flap. The flap's pitch as well as its distance to the main blade can be swiftly adjusted to actual wind variations by means of a control unit or adaptive mechanics, thus assuring an optimal airflow at the site of the main rotor. The flap adjustment unit is able to consider the position of the main blade, the actual rotor rotation speed, and the actual wind speed. A purely mechanical adaptive pitch adjustment is also in a state of planning.
Bats have long captured the imaginations of scientists and engineers with their unrivaled agility and maneuvering characteristics, achieved by functionally…
Researchers at the Department of Energy's Oak Ridge National Laboratory have set a new record in the transfer of information via superdense coding, a process…
A group of scientists led by Johannes Fink from the Institute of Science and Technology Austria (IST Austria) reported the first experimental observation of a…
Snow falls in winter and melts in spring, but what drives the phase change in between?
The newly developed method improves the monitoring and control process for beam welding. In contrast to most
commonly used methods, the new monitoring process is root sided, i. e. it takes place on the back part of the
workpiece. Furthermore, the invention describes a monitoring device optimized for beam welding. Beam welding
using the invention avoids incomplete fusion at the weld interface and increases the stability of the weld joint.
X-rays are one of the most important diagnostic tools in medicine, biology and the material sciences, as they may penetrate deep into material which is opaque…
As product diversity increases, the complexity of production processes is also rising. The consequence: employees, too, must be re-qualified. With the help of…
Method for reducing cross-talk / interference: The optimal utilization of the available frequency bands plays an important role in the transmission of messages. In frequency multiplexing, sub-frequency bands are allocated to individual communication channels, which are usually completely independent of each other. In practice, however, there is cross-talk, that is, in a channel, signals from the two adjacent channels are also received. Thus, the received signal is composed of useful signal and interference signal. The aim of the present invention is to compensate for the interfering signal component. This is particularly important when the intensity of the adjacent channel signals and thus the interference signal which they contribute are greater than the actual useful signal (“adjacent channel interference problem”).
Digitalization is making openness in the linking of IT solutions increasingly important. The Code of PLM Openness (CPO), developed by the ProSTEP iViP…
Charge flow frequency converters are used when especially small electrical currents must be measured. Usually, the integrator and the comparator are connected in series. The improved method can be used anywhere where very small currents of both polarities with high dynamics are measured.
Recently, surprising physical effects were observed using special microscopic waveguides for light. Such “photonic structures” currently are revolutionizing…
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