1 You have signs of infection, such as: 2  Increased pain, swelling, warmth, or redness around the bite. 3  Red streaks leading from the bite. 4  Pus draining from the bite.  A fever.
A negative index of refraction due to three-dimensional chirality is demonstrated for abilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which alsoshows negative electric and magnetic responses and exceptionally strong optical activity and circular dichro-ism.
This means that the molecule now has a slightly positive top and a slightly negative bottom, and so is overall a polar molecule. A polar molecule will need to be lop-sided in some way. Patterns of electronegativity in the Periodic Table. The most electronegative element is fluorine.