The air is thinner and usually cleaner at higher altitudes over mountains. With less absorbing atmosphere available, more UV reaches the Earth's surface. Bushfire smoke can absorb and reflect incoming ...

Abstract: In this work, we fabricated and characterized 4 × 4 parallel flip-chip AlGaN-based micro-LED arrays with varied mesa diameters of 120 µm, 100 µm, 80 µm, and 60 µm. The reported micro-LED ...

Vacuum ultraviolet (VUV, 100–200 nm) light sources are indispensable for advanced spectroscopy, quantum research, and semiconductor lithography. Although second harmonic generation (SHG) using ...

Two 16-year-old girls in northern Texas were also killed in the aftermath of the winter storm when their sled, pulled by a Jeep, crashed into a tree, the police said. By Christine Hauser Five children ...

Cheyenne Hangaman says she tried to save her three children by lifting them out of the water Three young brothers have died in Bonham, north Texas, after falling through ice on a private pond on ...

If you want to be the overlord of the small aquatic world beneath your feet, you need Own a Fish Pond codes. Imagine the scenes, a cute axolotl hanging out next to a school of anchovies. It’s as ...