Everybody, at least once in his life, has heard of sunglasses with polarized lenses, but how many knows what does it mean?
The polarization is only a reduction of the light reverb. Not clear yet? I will try to explain it better..
The polarized lenses have the capacity of catch better the light, reducing the annoyng reflections.
This is possible thanks to the construction of the polarized lens, which is made by a series of parallel stripes distanced in base of the wavelength of the light.
In pratice every stripe let pass only the waves which are of the same wavelenight of it; this allows to segmentate the light and catch every single detail.
In summary, the polarized lenses delete the reflections, giving you a better contrast, a right perception of the colors and a more relaxed vision.
But when is necessary to wear a pair of polarized sunglasses?
The answer is easy.
A plarized lens giving you a clearer vision in all contition of light, so you can use it to drive and also for the everyday life; the al situations when you cannot do without it are all the times you decide to pratice sport outdoor.
In the grand part of the outdoor sports (running, cycling, fishing..) the light conditions influence the preformance, for this motive is important to have a perfect perception of what we have all around.
There are many kind and colors of polarized lenses, all thinked for different light conditions.
For example the brown polarized lenses are perfect in all situation, from the sunrise to the sunset.
The grey ones are good in conditions of intense light, this lenses permit to mantain a clear vision also with direct light; the green, indeed, works better when the sky is cloudy.
If you want to have a better idea of the polarized effect take a look to the picture below:
As you can see in the second picture, where the light is polarized, the details appear more clear and the reverb has been eliminated.