|
|
When a person coughs or sneezes, they expel a cloud of microscopic particles capable of carrying viruses and bacteria that act as vectors for respiratory diseases such as flu, COVID-19 or tuberculosis. Understanding how these aerosols disperse in the air is crucial for minimizing the transmission of pathogens in indoor spaces, but their dynamics are complex and depend on many factors: the force of the exhalation, the morphology of the respiratory system, the characteristics of the space, etc. Now, a new study led by researchers from the Universitat Rovira i Virgili has shown that temperature also plays an important role.
Go to Source
Summer brings with it the sight of surfers moving seamlessly across wave crests, with ocean waters carrying them along coastlines. A team of scientists has now created a similar phenomenon—with small objects rather than surfers—that can be controlled by humans rather than by nature.
Go to Source
The weather on Earth can get pretty messy sometimes. But in space, it can be wild, and the effects can be far-reaching. Solar flares, giant explosions on the sun, can send out streams of energy that block radio communications and fry satellite electronics. Geomagnetic storms, caused by variations in solar wind, can mess with GPS signals and spark current surges on Earth that overload power grids.
Go to Source
Scientists from the Space Telescope Science Institute (STScI) in Baltimore, Maryland, sought to study one stellar subject and ended up finding something even more exciting. The team’s results published today in Astronomy & Astrophysics.
Go to Source
Close to 100 scientists from all over Europe, the United States, and Japan are gathering this week at the Institute for Solar Physics (KIS) in Freiburg to present and discuss the first scientific results from the successful third flight of the balloon-borne solar observatory SUNRISE. KIS is a key contributor to the SUNRISE project. The meeting marks a milestone in the study of the sun by bringing together researchers from all over the world who are analyzing unprecedented new data gathered by the SUNRISE III project.
Go to Source
Quantum computing, once only a theoretical possibility, promises to deliver faster, more energy-efficient computers—but only if scientists can build and scale the hardware needed to run the machines. New research from Virginia Commonwealth University brings scientists one small step closer to quantum computing at a practical scale, which could help dramatically reduce energy usage and computing times in some industries.
Go to Source
Grand Rapids PD officers responded to the scene after the man threatened to kill his family; he tried to set a cruiser ablaze, carjacked a woman and attacked a K-9 before the shooting
Go to Source
A research team led by Professor Nenad Miljkovic in The Grainger College of Engineering at the University of Illinois Urbana-Champaign has published a breakthrough study in Nature Physics. The work reports the first experimental discovery of a previously unknown frost propagation mechanism—a “suspended ice bridge”—offering new pathways for anti-frosting surface design.
Go to Source
UNSW Sydney engineers have riffed on the famous Schrödinger’s cat analogy to demonstrate a more efficient way to eliminate errors in quantum computing.
Go to Source
The largest magnetic map of the universe ever produced—five times larger than all previous efforts combined—marks the beginning of a new generation of research into intergalactic magnetism. Magnetic fields influence how galaxies grow, how matter moves through space, and how the universe has evolved over billions of years.
Go to Source
Birgitta Schultze-Bernhardt and her team at the Institute of Experimental Physics at Graz University of Technology (TU Graz) have developed a new type of UV dual-comb spectrometer that detects gaseous air pollutants with unrivaled accuracy and sensitivity. Using ultraviolet double laser light, the device measures the concentration of harmful gases such as formaldehyde within half a second.
Go to Source
The suspect was killed in “an officer-involved shooting involving Federal Bureau of Investigation personnel,” the Bakersfield Police Department said in a statement
Go to Source
Southwest Research Institute, or SwRI, is studying impact flashes generated by high-speed collisions. One application of understanding impact flashes is to remotely identify what materials are involved in the collisions. Advances in understanding optical impact flashes can be highly beneficial for missile defense, making it possible to determine the composition of an intercepted missile and its payload.
Go to Source
The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX)—which recently completed the largest survey ever taken of the early universe—has released all of its immense, information-rich database to the public. Built from more than half a petabyte of raw and processed data, it will allow astronomers to study how the first galaxies formed and evolved, measure how gas and stars were distributed within these galaxies, map the large-scale structure of the cosmos, and investigate rare and unexpected objects not easily found in traditional surveys.
Go to Source
Everyone knows that finding the right sauce recipe can make or break a barbecue, but now astronomers are using BBQSORS (pronounced “barbecue sauce”) as part of the recipe to explain quasars, some of the brightest objects in the universe. These results were made possible by data from a new instrument on the Subaru Telescope.
Go to Source
|
|