The black dots on a car windscreen are part of a ceramic black paint layer baked into the glass during manufacturing - and ...

Without them, the contrast between the black band and clear glass would be too noticeable, whereas the dot pattern creates a gradual fade, making the transition smoother and easier on the eyes.

While the basic eyes of most snails look like small black dots, conch snails known as strombids have eyes that are up to 10 times bigger than any of their relatives. These mobile, stalked eyes can ...