Electrostatic repulsion between electrons usually impairs the performance of electron microscopes. Now it can be turned into an advantage.
Category: futurism – Page 96
YouTube is down worldwide with playback error
YouTube is currently facing a global outage, with users reporting playback errors on both the website and mobile apps.
When trying to watch videos, users see messages like “Playback error” or “Something went wrong,” while some say the site is slow or not loading at all.
The outage began within the last 30 minutes.
Compact laser-plasma accelerator can generate muons on demand for imaging
Muon beams can now be created in a device that is the length of a ruler.
Researchers at Berkeley Lab presented a foot-long (30 cm) compact laser-plasma accelerator (LPA) that can generate and detect highly directional muon beams. It works by using intense laser pulses to accelerate electron beams, which then create muons in significantly higher numbers and with greater directionality, providing a powerful new alternative for non-destructive imaging of large or concealed objects.
Conventional artificial muon sources are bulky and expensive, which has left many imaging applications reliant on naturally occurring, scarce, and unreliable cosmic rays. The new LPA overcomes these constraints by producing significantly higher muon yields, slashing exposure times from months to minutes, according to the study published in Physical Review Accelerators and Beams.
New simulation reveals how Earth’s magnetic field first sparked to life
Geophysicists have modeled how Earth’s magnetic field could form even when its core was fully liquid. By removing the effects of viscosity in their simulation, they revealed a self-sustaining dynamo that mirrors today’s mechanism. The results illuminate Earth’s early history, life’s origins, and the magnetism of other planets. Plus, it could help forecast future changes to our planet’s protective shield.
