That's solar-powered death rays to be precise. (For other, older death ray designs check out some of these strange selections from our archives.) In the video above, Lauri Vuohensilta builds a solar death ray out of a satellite dish and some stick-on mirrors, assisted by his wife and adorable cat. The initial demonstration is cool, but not overwhelming--a stick of wood burns and a clay bird melts, but in the video Vuohensilta notes that they were experimenting later in the afternoon when the sun was not as strong. As the Finnish summer lengthens, we're sure that the death ray will start vanquishing more formidable opponents.