The atomic energy works wholly on total combustibility, and so the brahmastra also acts. It creates an intolerable heat similar to atomic radiation, but the difference is that the atomic bomb is a gross type of nuclear weapon, whereas the brahmastra is a subtle type of weapon produced by chanting hymns. (SB 1.7.27 PP). The following is a shocking video about the true nuclear fallout from the Japan disaster and its world-wide implications. Further reading: Measuring Radiation Nuclear Fallout (RADS) and Fukushima Radiation Levels similar to Nuclear Bomb Test Site.