Abstract: Vortex electromagnetic waves carrying orbital angular momentum have been widely studied in many fields because of their unique helical phase structure. The vortex electromagnetic waves can ...

I pushed eight free AI chatbots to their limits to find the best AI chatbots of 2026. To explore our top picks, check out ZDNET's chatbot-by-chatbot guide.

While upholding conviction under Section 456 IPC, the court reduced the jail term to period already undergone in a 1995 case, citing 30 years without reoffending and prolonged criminal proceedings The ...

The conference center at the World Economic Forum in Davos, Switzerland is being evacuated with no further information on the cause. A reporter on the scene described an unusual smell that is 'making ...

Donald Trump has told Europe they would all be speaking German 'and a little Japanese' without the US as he doubled down on his demands for Greenland but ruled out using force. Speaking at the World ...