A Sound Detector Shows How Far We’ve Come

If you need proof that technology has evolved so rapidly that it can be hard to wrap our minds around, this photo provides undeniable proof. Here you can see Chinese soldiers as they man a sound detector.

This huge piece of equipment, dwarfing the men around it, directs the firing of 3-inch anti-aircraft guns. Here it is being used against Japanese forces during the Second Sino-Japanese War. While at the time it would have been considered cutting-edge technology, there’s no doubt that, just decades later, the equipment seems bulky and antiquated. It’s an important reminder of the relentless and incredibly fast evolution of technology in the military.

sound detector

Near Chongqing (Chungking), Sichuan, Republic of China.

2 May 1941. 

Credit: Anti-Worlds