Hidden Features Of Everyday Items

Dots On Car Windows

As it turns out, the black dots found on cars and buses' windows aren't there just for aesthetics. The black paint prevents ultraviolet rays from deteriorating the window sealant, which holds the glass in place and keeps rain out of the vehicle. In addition, the black-painted glass heats up faster than the rest of the window. Thus, when heating the glass to bend it in the needed way, the dots help distribute the heat more evenly, preventing the windshield from warping in the heat.