After 1945, nuclear testing filled Earth’s atmosphere with trace radiation that contaminated all newly produced steel. This means that steel made after WWII is too radioactive for use in highly sensitive equipment, like Geiger counters, space instruments, and medical scanners. Instead, scientists use “low-background steel,” forged before 1945, often salvaged from sunken warships resting on the ocean floor. It’s a strange twist of history the weapons of war now serve science and healing. | Just F

18K views · 129 reactions | Learn how Nevada became America’s primary nuclear weapons test location at the National Atomic Testing Museum. From the Cold War to the Global War on Terror, the museum highlights the history of atomic testing and its relevance to national security and international stability . | Spirit of Nevada | Facebook

60K views · 369 reactions | The US has declassified hundreds of...