Humidity on window by hand!?

Question

I have this friend, when he approaches his finger to the window, it becomes humid, as if he is intiating heat or sth... does anyone know why? IT DOESNT WORK WHEN I TRY IT

thxxxxxx

Answer 1

Everyone has sweat glands in their skin, in every part of the skin. We are constantly sending off small amounts of water through these glands. If you want to prove it, wrap your hand in plastic wrap or just put it inside an empty bread wrapper and wait a few minutes, it'll get moist in there!

When skin is put next to a cold window, that water vapor condenses, and fogs up the window.

And these glands open more when we get hot and the body needs to cool down. In your case, your "thermostat" is set differently than your friend's. But it's not magic, it's biology.

Answer 2

Same thing happens to me. When I'm in a car on a cold day, the windows near me fog up more than anyone else's in the car.

I do overheat easily, and prefer cooler conditions. And have been told that I'm very warm, although my normal temp according to the thermometer is 97.1

Answer 3

Under certain conditions, the windshield in my car fogs up near my hand. I defog and move my hands down to the bottom of the wheel and it does not return.
I am overweight. Overweight people have higher temperatures than skinny people, you know we have more fuel in the fire, so to speak.
I wonder if your friend is over weight?

Answer 4

Your friends finger is hotter than yours. Like how you take a hot shower and it makes the room fog, but you take cold shower and the room stays the same. You just have a colder hand.

Answer 5

You're just not as hot Karen!