Polarised sunglasses are designed to reduce the sun’s glare and hence its strain on our eyes. When the light comes in contact with the surface, it scatters because it leaps at varying angles off an object’s irregular surface. Polarized lenses have a unique chemical applied to them to filter light.
The molecules present in the chemical are lined up precisely in a way that blocks the light from passing through the lens. Consider a mini blind hanging in front of a windowpane. The only light that penetrates through the blind’s openings is visible. However, because these sunglasses are so promising, they are exorbitantly priced. It would help if you ascertained their authenticity and potency to get your money’s worth.
WAYS OF DETERMINING WHETHER YOUR GLASSES ARE POLARISED
Examine it on a reflective surface
Find a reflective surface that leaves a glare when light is pointed towards it. It could be a tabletop, mirror or any other surface that is shiny and flat. The glare must be apparent from two to three feet away; hence stay mindful of the details. To produce the glare, turn on the overhead lights or use a flashlight directed towards the surface. This should produce triumphant results.
Time to put the glasses on
Next, hold the glasses about six to eight inches in front of your eyes. The surface area in front of you should be apparent in one of the lenses at all times. The distance is also contingent on the size of the lenses in your sunglasses.
Hold up the glass to a 60-degree angle
Rotate your glasses upwards to a 60-degree angle. They are at an angle by this time, with one pair of lenses being higher than the other. It is essential to remember that the glasses are polarised in specific directions; hence rotating them will prove their efficacy better.
You can continue to adjust the angles contingent on how the glare is falling upon the surface and if it makes a noticeable difference.
Check how significant the glare is
The most significant indicator of polarised glasses is the absence of glare. You should notice a slightly darker side and mark no glare whatsoever. The surface will appear like a shining one but dimly lit. To be confident of your analysis, move the glasses a couple of times to ensure that the results are effective. Next, move away from the glasses and compare the two visions, with and without. Intermittently practicing it will produce honest answers.
HOW CAN ONE COMPARE TWO POLARISED GLASSES TO CHECK THEIR EFFICACY?
If you are at a store and are vacillating between your choices, you can follow these techniques to make a better purchase.
Hold out the glass in front of the other pair and ensure that they do not touch each other. First, expose the glasses to a brighter setting to draw your conclusions more triumphantly. You could also employ natural light. Next, rotate the glasses by 60 degrees and keep them aligned.
They should be steadily placed. Subsequently, take a gander at the overlapping section of the lenses to check if it is darker. If both these glasses are polarised, the overlapping lenses will appear darker as one looks at them head-on. If the pair in question is not polarised, you will not notice a color difference.
Hopefully, you will make a prudent procurement with these approaches.