why do fingerprints cause smudges on surfaces such as glass?
In: Biology
Imagine a fingerprint like a stamp and the pills and residue on the finger like ink. If you press the stamp into the ink and then carefully press it onto paper, you get a clear reproduction of what’s on the stamp. Same with a fingerprint.
If you drag and twist the stamp across the paper, you get a smudge. Same with a fingerprint causing a smudge after being dragged across a surface.
Latest Answers