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.
NN' be the normal drawn to the surface. (Rarer and Denser medium: Denser medium has the refractive index greater than that of the rarer medium. 3) Total Internal Reflection: When a ray of light AO passes from denser medium to rarer medium, light is partly reflected along OB and is refracted at r along OC.