That was a fascinating p9 article. I never before heard of German plans for a death ray, or that they invented base bleed artillery.
Seems like something was lost in translation, or more likely in typical scientifically-ignorant reporting, when the Germans were reported to have claimed that at 5,100 miles up “gravity dwindles to zero.” No one with even a slight introduction to physics would think that—after all, what holds our moon in orbit at eighty times that distance?
Er, make that 47 times.