标签：#laser

The Army says its laser system can track and destroy hostile drones.

The US Army’s laser system is part of a new generation of directed-energy weapons capable of detecting, tracking, and destroying drones with a concentrated beam of light.

Facing a growing drone threat, the Pentagon is poised to sign a first-of-its-kind contract for “Enduring High Energy Lasers”—and make directed energy weapons an official part of the Army’s kit.

Do I Need Ventilation for a Laser Engraver? Safety Facts You Must Know If you're new to laser engraving, you're probably excited about getting your first machine and starting your first project. But here's one question that pops up for every beginner: do you need ventilation for a laser engraver? The short answer is yes, you absolutely need proper ventilation for laser engraving . In fact, it's not just a recommendation—it's a safety requirement. As someone who's been laser engraving for years and has helped dozens of beginners get set up, I've seen what happens when people cut corners on ventilation. Let me break down everything you need to know about laser engraver ventilation requirements, why it matters, and what your options are—even if you're on a tight budget. Why Is Ventilation Important for Laser Engraving? When your laser engraver cuts or etches materials, it doesn't just magically remove material. The laser beam heats up the material to such a high temperature that it vaporizes it. This process creates laser fumes and fine particles that float around in the air. What's in Those Laser Fumes? The exact composition depends on what you're cutting, but here are some common things you'll find: Fine particulate matter (microscopic particles that can get deep into your lungs) Volatile organic compounds (VOCs) that have strong odors and can cause health issues Toxic chemicals depending on the material (formaldehyde from plywood, cyanide from some plastics, etc.) Irritating gases that can make your eyes water and your throat burn Health Risks of Poor Ventilation So what happens if you don't ventilate? Let's talk about the real risks, not just scare tactics: Short-term effects: Headaches and dizziness from breathing in fumes Irritation of eyes, nose, and throat Allergic reactions or asthma attacks Nausea from strong odors Dirty residue covering everything in your workspace Long-term effects: Chronic respiratory problems from repeated exposure to fine particles Incre

"I don’t know of a bigger question we can answer as humans."

Fusion startup Xcimer fired up the world's largest privately owned laser.