Lifeboat Foundation

COVID-19 has killed at least 140 people in the U.S.

This could used to emp laser missiles or other targets.

The electromagnetic pulses (EMPs) generated during the interaction of a focused 1.315-μm sub-nanosecond laser pulse with a solid hydrogen ribbon were measured. The strength and temporal characteristics of EMPs were found to be dependent on the target density. If a low density target is ionized during the interaction with the laser, and the plasma does not physically touch the target holder, the EMP is weaker in strength and shorter in time duration. It is shown that during the H₂ target experiment, the EMP does not strongly affect the response of fast electronic devices. The measurements of the EMP were carried out by Rohde&Schwarz B-Probes, particularly sensitive in the frequency range from 30 MHz and 1 GHz. Numerical simulations of resonant frequencies of the target chamber used in the experiment at the Prague Asterix Laser System kJ-class laser facility elucidate the peaked structure of EMP frequency spectra in the GHz domain.

Need to reduce high-pitched noises? Science may have an answer.

In a new study, theoretical physicists report that materials made from tapered chains of spherical beads could help dampen sounds that lie at the upper range of human hearing or just beyond.

The impacts of such noises on health are uncertain. But some research suggests that effects could include nausea, headaches, dizziness, impaired hearing or other symptoms.

While getting shots or blood work isn’t anyone’s idea of fun, roughly 10 to 20 percent of American adults suffer from trypanophobia, the extreme fear of hypodermic needles and injections. This phobia can prevent people from partaking in routine medical exams, receiving life-saving vaccines or even properly managing their blood-glucose levels (should they suffer from diabetes). However, a pair of novel injection systems offers the promise of putting those critical medicines into our bodies without ever breaking the skin.

In a preprint paper, Microsoft researchers describe a machine learning system that reasons out the correct actions to take directly from camera images. It’s trained via simulation and learns to independently navigate environments and conditions in the real world, including unseen situations, which makes it a fit for robots deployed in search and rescue missions. Someday, it could help those robots more quickly identify people in need of help.

“We wanted to push current technology to get closer to a human’s ability to interpret environmental cues, adapt to difficult conditions and operate autonomously,” wrote the researchers in a blog post published this week. “We were interested in exploring the question of what it would take to build autonomous systems that achieve similar performance levels.”

In a multiyear effort involving three national laboratories from across the United States, researchers have successfully built and tested a powerful new magnet based on an advanced superconducting material. The eight-ton device—about as long as a semi-truck trailer—set a record for the highest field strength ever recorded for an accelerator focusing magnet and raises the standard for magnets operating in high-energy particle colliders.

The Department of Energy’s Fermilab, Brookhaven National Laboratory and Lawrence Berkeley National Laboratory designed, built and tested the new magnet, one of 16 they will provide for operation in the High-Luminosity Large Hadron Collider at CERN laboratory in Europe. The 16 magnets, along with another eight produced by CERN, serve as “optics” for charged particles: They will focus beams of protons into a tiny, infinitesimal spot as they approach collision inside two different particle detectors.

Continue reading “Three national laboratories achieve record magnetic field for accelerator focusing magnet” »

Stellar streams are long, thin filaments of stars orbiting galaxies, produced by the stretching action of tidal forces. For astronomers, observation of these structures could be crucial to test various galaxy formation models.

Located most likely some 420 light-years away in the Milky Way’s disk, Pisces–Eridanus (or Psc–Eri for short) is a cylindrically shaped stream of almost 1,400 identified stars distributed across about 2,300 light-years. Due to its relative proximity and population size, it is perceived as an excellent laboratory to study star formation and test theories of chemical and dynamical evolution of stellar systems.

Intel Corp. is releasing an experimental research system for neuromorphic computing, a cutting-edge method that simulates the way human brains work to perform computations faster, using significantly less energy.

The system, called Pohoiki Springs, will be made available this month over the cloud to members of the Intel Neuromorphic Research Community, which includes academic researchers, government labs and about a dozen companies such as Accenture PLC and Airbus SE.

Others, including International Business Machines Corp., are also researching the technique.

Analysis: there have been reports of recent incursions of Russian bombers like the Tupolev TU–95 in airspace controlled by Ireland

There have been a number of recent incursions into Irish controlled airspace by the Russian air force. Most recently Tupolev TU–95, the so called “Bear” strategic bomber aircraft, triggered UK Royal Air Force fighter jets to scramble in order to confront the Russian aircraft. Reliable sources indicate that there is an agreement between the UK and Ireland permitting the Royal Air Force to enter Irish airspace if deemed necessary, though the specific nature of this arrangement is not clear.

Continue reading “Why are Russian military aircraft flying in Irish airspace?” »