Researchers created sound that can bend itself through space, reaching only your ear in a crowd
Controlling where sound goes is difficult because of a phenomenon called diffraction – the tendency of sound waves to spread out as they travel. This effect is particularly strong for low-frequency ...
Hickory Daily Record15h
US shoppers increased spending tepidly last month as anxiety over the economy rises
Shoppers stepped up their spending just a bit in February after a sharp pullback the previous month, signaling that Americans ...