3 ms·I thought one of the first signs of radiation was nausea and diarrhea.by grogenaut 10y agoI thought one of the first signs of radiation was nausea and diarrhea.sqeaky 10y agoBut those are only temporary until the death part sets in.M_Grey 10y agoOh no, if you were exposed to a naked source of the type used to test the limits of organisms like tardigrades... you'd just die. Really, really, really quickly.