ninjee writes "Historians working in Germany and the US claim to have found a 60-year-old diagram showing a Nazi nuclear bomb. It is the only known drawing of a "nuke" made by Nazi experts and appears in a report held by a private archive. The researchers who brought it to light say the drawing is a rough schematic and does not imply the Nazis built, or were close to building, an atomic bomb. But a detail in the report hints some Nazi scientists may have been closer to that goal than was previously believed. The report containing the diagram is undated, but the researchers claim the evidence points to it being produced immediately after the end of the war in Europe. It deals with the work of German nuclear scientists during the war and lacks a title page, so there is no evidence of who composed it. One historian behind the discovery, Rainer Karlsch, caused a storm of controversy earlier this year when he claimed to have uncovered evidence the Nazis successfully tested a primitive nuclear device in the last days of WWII. A number of historians rejected the claim. The drawing is published in an article written for Physics World magazine by Karlsch and Mark Walker, professor of history at Union College in Schenectady, US."