Have you ever wondered what the little black dots on windshields of late model cars are about? Those dots are called frits and they serve a couple of purposes, first they help distribute the temperature across the glass, reducing the chances of optical illusions making driving safer. Their second function is they etch the glass making a rougher surface so adhesives can stick. The last consideration is aesthetic in that they gradually decrease in size to make the glass and the frits transition more pleasing to the eye.
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