This playful optical illusion hides a single odd number among dozens of 5s. The challenge looks easy, until your eyes start tricking you. Look closely, stay patient, and the answer quietly appears.

A visual puzzle challenges you to find two hidden numbers, 58 and 33, amidst a sea of 53s within 12 seconds. This exercise ...

Abstract: A phased-array feeding network that scans a limited region in space with low-sidelobe levels and a low number of phase shifters is investigated. The interwoven coupling network is composed ...