The people who did the dirty work of making early atomic bombs were in Hanford, Washington. Throughout the Cold War, Hanford churned out plutonium for our nuclear arsenal. It was also, conveniently, a place to experiment with radiation.
On July 15th, 1942—in the midst of World War II's long-running Battle of the Atlantic—a German U-boat and a Nicaraguan freighter were wrecked a mere 30 miles off the coast of North Carolina's Cape Hatteras.
Before the arrival of the microchip in the 1970s, we didn’t have the luxury of the portable electronic calculator -- we were limited to desktop models than ran off electric current. But it wasn’t actually a problem that needed solving, as if you wanted to carry a calculator in your pocket and do complicated arithmetic on the fly, you could just use a Curta.