Hrungnir Hrungnir Hrungnir (Old Norse "brawler") was a jötunn in Norse mythology, slain by the god Thor with his hammer Mjölnir. The account is documented in the "Skáldskaparmál", in the "Prose Edda" by Snorri Sturluson. Prior to his demise, Hrungnir engaged in a wager with Odin in which Odin stakes his head on his horse, Sleipnir, being faster than Hrungnir's steed Gullfaxi. During the race, which Sleipnir wins, Hrungnir enters Valhalla, and there becomes drunk and abusive. After they grow weary of him, the gods call on Thor to battle Hrungnir. Thor and his servant Thjalfi challenge the giant, who hurls
Legged robot tripod. Four-legged robots also benefit from a lower center of gravity than two-legged systems. Four legged robots include: Six-legged robots, or "hexapods", are motivated by a desire for even greater stability than bipedal or quadrupedal robots. Their final designs often mimic the mechanics of insects, and their gaits may be categorized similarly. These include: Six-legged robots include: Eight-legged legged robots are inspired by spiders and other arachnids, as well as some underwater walkers. They offer by far the greatest stability, which enabled some early successes with legged robots. Eight-legged robots include: Some robots use a combination of legs and wheels.