The effects of solar activity on the stratospheric waveguides and downward reflection of planetary waves during NH early to midwinter are examined. Under high solar (HS) conditions, enhanced westerly ...

Xinhua Hu and colleagues at Fudan University in Shanghai, China, have come up with a way to create shield against water waves that, unlike Enoch and Guenneau’s set-up, could also double up as a ...

DURHAM, N.C. -- Researchers at Duke University and Aalto University (Finland) have constructed a "meta-mirror" device capable of perfectly reflecting sound waves in any direction. The ...

Subjects were recruited from an outpatient department of cardiovascular division at the Taipei Veteran General Hospital between September 2007 and November 2009. All subjects had signed a consent form ...

Researchers have constructed a 'meta-mirror' device capable of perfectly reflecting sound waves in any direction. The proof-of-principle demonstration is analogous to looking directly into a mirror ...