Its negative form is exhibited by left-handed metamaterials, and another form occurs in anisotropic materials, where it produces extraordinary and ordinary rays, such as in calcite.
Veselago studied one form of this phenomenon which occurs when the dot product of the Poynting vector and the wavevector is negative. Its negative form is exhibited by left-handed metamaterials, and another form occurs in anisotropic materials, where it produces extraordinary and ordinary rays, such as in calcite. The angle at which this occurs appears in Snell's law along with this phenomenon's namesake dimensionless index. Occurring due to a change in a wave's speed, it makes straws appear bent in water. For 10 points, name this phenomenon that causes a light wave to change direction.
Veselago studied one form of this phenomenon which occurs when the dot product of the Poynting vector and the wavevector is negative.
{refraction} [accept word forms]