On a tangent but here is a nice introductory piece for Soviet Union RTG (Radioisotope Thermolectric Generator) https://www.bbc.com/reel/video/p0931jtk/the-nucl

On a tangent but here is a nice introductory piece for Soviet Union RTG (Radioisotope Thermolectric Generator) https://www.bbc.com/reel/video/p0931jtk/the-nuclear-lighthouses-built-by-the-soviets-in-the-arctic https://www.bbc.com/reel/video/p0931jtk/the-nuclear-lighthou... The Soviet union built these transportable units for unmanned lighthouses