How Many Calories are on a Smudgy Screen?
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Hey, Vsauce. Michael here. And I'm home for the holidays. I'm in my parents' basement, using a different camera than usual. But you know what is always different? Fingerprints. The palms of our hands and the soles of our feet are weird. They are covered with friction ridges, which act like the design of a stamp that stamps everything you touch. Plastic or patent prints are visible to the naked eye. But even with seemingly clean hands on a seemingly clean surface, a fingerprint can be left. A latent fingerprint. But what are those made of? Well, by the square millimetre, they're made out of this. All of this stuff is natural. In fact, a lot of it is produced to keep your skin healthy, waterproof, pliable. But touch a surface enough and the ...
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Hey, Vsauce. Michael here. And I'm home for the holidays. I'm in my parents' basement, using a different camera than usual. But you know what is always different? Fingerprints. The palms of our hands and the soles of our feet are weird. They are covered with friction ridges, which act like the design of a stamp that stamps everything you touch. Plastic or patent prints are visible to the naked eye. But even with seemingly clean hands on a seemingly clean surface, a fingerprint can be left. A latent fingerprint. But what are those made of? Well, by the square millimetre, they're made out of this. All of this stuff is natural. In fact, a lot of it is produced to keep your skin healthy, waterproof, pliable. But touch a surface enough and the ...
