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.
Refraction through Glass and Water. A plate of glass with parallel faces having a refractive index of 1.51 is resting on the surface of water in a tank. A ray of light coming from above in air makes an angle of incidence 34.0 with the normal to the top surface of the glass.http://session.masteringphysics.com/problemAsset/1003676/22/172997.jpg. plate of glass with parallel faces having a refractive index of 1.51 is resting on the surface of water in a tank.