The Astoria Column is a 125-foot tall column located on Coxcomb Hill, the highest point in Astoria, Oregon. The Column, built in 1926, is made of concrete and has a spiral staircase of 164 steps ...

Religious sites in France aren’t just places of worship—they’re architectural and cultural icons, filled with centuries-old artistry and history. From grand cathedrals to intimate chapels, each site ...

This paper presents a novel bidirectional X-band antenna design with symmetrical logarithmic arms and PIN-controlled conical sections. Each arm has a PIN diode and the antenna is fed centrally by a ...