It has, shall we say, a very high negative index.

The term is also used to refer to lenses that provide a negative index of refraction.

These dimensions are the positive and negative indices of inertia.

This is due to their negative index of refraction.

You should be drawn to that negative index as soon as you see one.

If the material has a negative index of refraction, the traced light path would have the same change in slope but the opposite sign.

The large negative indices on the initial values reflect the 1152 steps that must take place before output is produced.

Obtaining a negative refractive index with acoustic materials is different.

This can occur only when one of the two materials has a negative refractive index.

However, these artificial materials are able to create the overall effect of negative refractive index.