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/sci/ - Science & Math

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2251085 No.2251085 [Reply] [Original]

why are metal and glass cold to touch whe something like wood, in the same conditions isn't?

Is it just that metal's a better conductor of heat?

>> No.2251087

No, your body is trolling you.

>> No.2251097

>>2251085 Is it just that metal's a better conductor of heat?
Yes.

Your skin can't really measure temperature, only the rate at which it is losing heat. Objects which are better heat conductors pull heat away faster.

>> No.2251099

>>2251087
explain further please. Are they the same temperature?

>> No.2251277

>>2251099
Yes.
It's a matter of how fast your skin loses energy. Conductivity and heat capacity matters.

>> No.2251294
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2251294

>>2251097
>Your skin can't really measure temperature, only the rate at which it is losing heat. Objects which are better heat conductors pull heat away faster.

>> No.2251676

>>2251097
NEVER KNEW THIS

>> No.2251682

>>2251097
so if you have a it of metal at exactly 37 degress celcius (human body temperature) and touch it, it won't feel hot or cold or something?

>> No.2251689

>>2251682

YOU WONT FEEL ANYTHING

>> No.2251697
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2251697

>>2251689

>> No.2251698

>>2251676
u can't feel hot and cold at the same time. creepy aint it bro.

>> No.2251702

>>2251697
and all were dead. it truley was a silent night.

>> No.2251709

>>2251702
Kind of off topic, but I remember when I was a kid my dad telling me that clowns skin kids alive, and that the clowns and Santa would team up to get the naughty kids.

I'm not making this up.

>> No.2251712

>>2251698
actually you can.
there's a demonstration of such at the exploritorium in san fransisco.
Essentially, there are two copper pipes wound in a double helix, one has hot water pumped through it, the other cold water. You can touch the double helix and feel hot and cold from the same skin. It's quite an experience.

>> No.2251719

>>2251097
>>2251277
Then... if I, with my hand, touch my leg. First, I feel it is cold, but then heats up. Is it because of what you said? Or is it my hand that heats up? (or both, maybe)

>> No.2251725

>>2251097
>Your skin can't really measure temperature, only the rate at which it is losing heat.

Or gaining heat, in the case of touching hot objects.

Our sense of temperature is less about the actual temperature and more about warning us when external stimulus is pushing us out of homeostasis.

>> No.2251730

This thread is fascinating. I never knew this, but it makes sense I suppose.

>> No.2251733

>Is it just that metal's a better conductor of heat?

Yes.

>> No.2251736
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2251736

>this thread

>> No.2251761

>>2251689
Yes you will feel something. It is true we do not measure temperature, but rather flow of heat in and out of our body (through our nerves). In this way, we feel all temperatures. At 37C, you feel a net temp flow of 0, (the body is not so exact) and you will register it, just as if you felt a net flow of 2 degres per second, or what have you.

>> No.2251771

WAIT WAIT WAIT
but if im in a room thats 97.6 degrees F, then how come you would call that hot? because us amerifags all learned in biology that the body is constantly 97.6 F. then why does 80 F feel like normal or "room temperature"?

>> No.2251787

>>2251771
Your core temp

>> No.2251797

>>2251771
>>2251787
so ... what? Can you explain 'core temp' a bit more please?

>> No.2251801

So if you have a block of wood and a block of iron cooled to the same temperature, the iron would feel colder?

>> No.2251804

>>2251801
Yes, because the iron would conduct heat more effectively than the wood would (lol pun)

>> No.2251806

>>2251797
core temperature is the temperature of your organs and internal structure. Your skin is much more capable of handling large changes in temperature, so your body will alter bloodflow to keep your insides consistent.

If your core temperature is dropping, you're in serious danger of hypothermia.

>> No.2251820

>>2251771

"comfortable" does not mean zero net heat loss.

Your biological processes produce waste heat that you must dispose of. An external temperature a little below your body's core temperature will feel more comfortable because of this.

>> No.2251826

>>2251820
ok, now THAT'S the kind of explination i was looking for. thank you

>> No.2252376

it also relates to the heat capacities of the substances... something that conducts well but but has a low heat capacity will not seem quite as cold...etcq