ultrafacts:The proton beam, containing about 200,000 rads (2,000 grays), shot through the back of
ultrafacts: The proton beam, containing about 200,000 rads (2,000 grays), shot through the back of his skull and exited near the left side of his nose at 300,000 rads (3,000 grays). This is when he experienced a flash, in the briefest instant, “brighter than a thousand suns” but felt no pain. Source+more infoFollow Ultrafacts for more facts -- source link