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Tuesday, May 14 2019
Tech Demystified: What's with the Dots on Car Windows?

Ever notice the funny dots by the sides of your car windows?

Well, if you haven’t go take a look. 
Because they’re not just there for decoration. They’re there for function!

And, if it weren’t for those silly dots, your ride wouldn’t be quite as convenient.

What exactly are the dots?

It all starts with the black band that runs alongside the window’s edges. The black is made of a ceramic paint (similar to the material of window tint films). The purpose of this band is mainly to protect the sealant that holds your windows in place.

Though we love (and need) the sun, sometimes its effects can be a bit troublesome. When it comes to our cars, the sun’s heat and powerful rays can actually damage and fade parts of the car –in this case, window sealants. Left on its own, window sealant would get totally faded from the sun’s rays, and that would result in wobbly windows and not-so sturdy glass. 

That’s where the black band comes in. The band protects the window sealant, keeping it safe and secure out of sight from the sun. 

You can drive on knowing your window is not going to fall out or on top of you.

So, where do the dots enter the picture?

A thick black band is a stark contrast to transparent glass. That’s why car and window manufacturers add the dots. Those small black circles are there to create an easy gradient that is aesthetically pleasing to the eye. This way, your eyes don’t get distracted or pulled toward the color variation, and you can keep focused on the road.

The dots also help in another way. Since black absorbs heat faster, and thus heats up quicker, the direct temperature contrast between the black and the transparent can cause visual distortions. But the dots stop this from happening by creating a fluid transition between the two colors. 

Plus, it makes your ride look that much sleeker.

And, there’s one more thing.

What about the dots around the rearview mirror? The ones on the front windshield that usually form a funny shape? Well those are there for a different reason.

The black dots on the front window are there to keep the sun out of your eyes. That’s why they’re at the top. They add an extra layer of protection in case the sun gets past or around your sun visors.

What can you learn from these dots?

Even the smallest of things in this world can have purpose. 
And sometimes, it’s those little things in life that deserve the most attention and biggest gratitude. Don’t just write something off until you’ve really taken the time to learn what it is and know how it works.

Because chances are, whatever it is, it’s there for a reason.

The next time you notice the black bands and small black dots lining your windows, be thankful they’re there. Because, they’re keeping you safe.

Posted by: AT 01:25 am   |  Permalink   |  Email

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