Ionizing radiations are used in radiation therapy. The charged particles mentioned above all belong to the ionizing radiations. Lightning discharges generate a wide range of electromagnetic radiations, including radio-frequency pulses. Radioactivity is describing particle radiations, often related to nuclear reactions. These radiations were given the name "Becquerel Rays". Electronic support measures gather intelligence through passive "listening" to electromagnetic radiations of military interest. The expansion of grasslands and radiations among terrestrial herbivores correlates to fluctuations in CO. S1 receives parallel thalamocortical radiations from the posterior medial nucleus and the VPN. The thalamus is connected to the cerebral cortex via the thalamocortical radiations. Lesions of the optic radiations are usually unilateral and commonly vascular in origin. Cetacean evolution consisted of three main radiations. Such radiations are explanation for groups that are morphologically conservative. This suggests that the very deep ocean has fostered adaptive radiations. The mylodontoids form one of three major radiations of sloths. The nature of these radiations was only gradually understood in later years.