Black Friday shopping season is already in full blast, and it’s just mid-November. Highly rated speakers and soundbars are on ...

BestReviews rounded up the best early Amazon Black Friday deals of 2025 - electronics, kitchenware, furniture and more.

Sonos Arc Ultra ($1,099): The high-end Sonos Arc Ultra has even better bass than the previous model, and it's great for music in particular. Yet it isn't as expansive-sounding as before and it costs ...

Abstract: We present a full quantum calculation of the electron-hole generation/recombination rate caused by atomic-scale defects, which are known to be at the origin of the noise in semiconductors.