In this work, an atomic force microscope (AFM) is combined with a confocal Raman spectroscopy setup to follow in situ the evolution of the G-band feature of isolated single-wall carbon nanotubes ...

Editor’s note: The following is an excerpt from Emily M. Bender and Alex Hanna’s new book, The AI Con, published in May 2025 by Harper. Used with permission. National, regional, and municipal leaders ...

Earlier this year, the administration fired 400 Federal Aviation Administration employees. “All of these people are part of the safety net,” said David Spero, president of the Professional Aviation ...

We report on measurements of frequency shifts in a high-performance microwave cesium vapor cell atomic clock based on coherent population trapping (CPT). The dependence of the clock frequency on ...

Pat Nabong/Sun-Times Share A Wall Street rating agency on Tuesday assigned an A- bond rating to Mayor Brandon Johnson’s upcoming plan to borrow more than $600 million for infrastructure ...

For more about Holly's Optical Atomic Strontium Ion Clock, check out the OASIC project on NASA's website.- For more about the Longitude Problem, check out Dava Sobel's book, Longitude.