Over-exposure to certain types of electromagnetic radiation can be harmful. The higher the frequency of the radiation, the more damage it is likely to cause to the body:1  microwaves cause internal heating of body tissues. 2  infrared radiation is felt as heat and causes skin burns.ver-exposure to certain types of electromagnetic radiation can be harmful. The higher the frequency of the radiation, the more damage it is likely to cause to the body:
Hygelac is also mentioned in Beowulf, a long poem in Old English (the language spoken in early medieval England). The poet describes how Hygelac took on the combined forces of Franks, Frisians and âHetwareâ (the âAtt-oariiâ of the Liber Historiae Francorum) and that he died in Frisia. ealdor dugoÃ°e.
Hrothgar, however, realizes the truth. He indirectly tells Beowulf that, much like him, Hrothgar was seduced by her, and Grendel was the result of their tryst. Hrothgar crowns Beowulf king, much to the dismay of his royal advisor, Unferth, who was hoping to take the throne. Hrothgar then commits suicide by jumping from the castle parapet onto the beach below. A wave momentarily engulfs Hrothgar's body, there is a golden flash underwater, and the body is gone.