Since optical frequencies are the most compatible with cellular life, there is a great deal of interest in the applicability of these lenses.

Materials such as dyes and phosphors must be able to absorb "light" at optical frequencies.

The things showed up at optical frequencies, even: patterns of tidy hexagons each a meteror so across.

In particular, it is not possible to combine two or more inputs of the same optical frequency into one single-polarization output without significant excess losses.

For example, in Fall, a single perpendiculars curve is repeated to create a field of varying optical frequencies.

In 2009 a group of researchers announced cloaking at optical frequencies.

Hahn echos have also been observed at optical frequencies.

Stacking layers is important to achieve the desired results at optical frequencies.

At optical frequencies characteristics of some noble metals are altered.

I was showing the universe as it appeared to human eyes, in the optical frequencies of light.