Submitted 20 hours ago by cheese_greater@lemmy.world to nostupidquestions@lemmy.world
Farts are always 37°, your core temperature.
Therefore: yes, your fart heats up the room.
If one was already profoundly hypothermic,
Your skin is way cooler, and your arms and legs, but your core remains very close to 37.
If your core goes profoundly below 35°, you don’t care about farting anymore.
Personally I always care about farting
I would feel like crap if I hit 37, normally sit at 36.6/36.7 where one ok our kids always seems to sit at 37.2.
surly the total entropy in the room will stay the same?
The short answer to the post title is a hard “yes” due to enthalpy of solvation.
The answer to your followup question would require some modeling — with the main factors being fart composition, body mass, thermal gradient, and room size.
If the room is completely isolated, how can an internal action result in net increase in temperature of the isolated room?
PS: i have a basic understanding of thermodynamics
What about liquid particles in the flatulence phase-changing and lowering the temperature? (Like how an evaporative swamp cooler works)
I didn’t take shartery into account, but that’s a great point.
Farts are remarkably dry.
Exactly, beside one techniallity:
The process of fart mixing into ambient air generates heat.
No, it does not generate heat. It carries a portion of heat from the body and transports it into the ambient air in the room. Almost simultaneously, an equivalent amount of air leaves the room to the outside. The increased heat of the air yields into an increased temperature in the room.
The act of mixing is an exothermic chemical process that does in fact explicitly generate heat. You can read up here if curious: en.wikipedia.org/…/Enthalpy_change_of_solution
I have a degree in physics and work in biomed R&D. I am a qualified fart scientist — this is what I live for.
No no, dissolution does generate heat. It's called heat of solvation.
Is it any different from hot air exhaled from your lungs?
Mine tend to lower the temp of the room when everyone else flees to escape the smell.
People are missing that the fart is under pressure is the body. Increasing the gas volume from your colon to the room will produce a drop in mean enthalpy due to the reduction in mean gas pressure.
yes, but, it’s already warmer than room temp being cooked in your colon. not sure if that evens things out…
Presumably the average temperature of the room pre fart Includes the gas in your colon.
The fart doesn’t decrease the body temperature, but it does (marginally) reduce your body mass, and therefore your body’s capacity to “carry” heat. If you’re hypothermic, your fart will most likely still be body temperature, as your core temperature remains at the correct temperature as long as possible, even sacrificing other areas if necessary.
If you’re hypothermic to the point where your fart is cold, it might be beneficial to let one rip if you’re entering a warmer area, so that your body no longer has to heat up the gas as well. If you’re somewhere cold, the fart probably won’t make a difference.
If you’re hypothermic to the point where your fart is cold, it might be beneficial
… then your body is already dead, and the fart is involuntary
Your a heat source but the fart is not. To any degree it has heat is from your body so you will cool as much as the fart is hot. So the fart will not increase the rooms temperature but your metabolic process is producing heat constantly causing you to heat the room constantly.
This is an interesting detail, but there is akready so much written here, and lots wrong, that giving an answer that really helps would be way too much effort.
But in real world terms it really does not matter at all and you would have a very hard time even measuring any sort of effect.
There must be a machine
We need a room calorimeter and a lot of beans.
BTW, If one was already profoundly hypothermic, would it be unwise to fart?
Assuming the ambient air temperature is cold enough to induce hypothermia, farting is fine. Bringing cold air into the body is the problem. You’d be better off if you stopped breathing.
They were part of you that were already at a constant temperature. It would distribute the heat quicker but the overall heat transfer is the same.
One factor that changes this is that because your body maintains a constant temperature, releasing heat faster would cause your body to generate more heat to compensate.
No. Heat is defined as average kenetic energy. It doesn’t make a difference if that heat is in the atmosphere in a room, or in the body of a person in that room.
not sure I agree. the heat contained in the body is warmer than room temp; transferring a portion of that heat out of the colon and diffusing it around the room has to bring the room’s temp up faster than the warm body (farter) transfers heat into the ambient room temp.
If OP meant atmosphere temperature they should have said that.
Rhynoplaz@lemmy.world 20 hours ago
If one is hypothermic, I would actually recommend that they fart as much as possible.
Heat doesn’t come from nowhere. If a fart increases the temperature of the room, then it must decrease the temperature of the body it escaped from.
TranquilTurbulence@lemmy.zip 17 hours ago
Expelling gas removes that bit of thermal energy (heat) from your system, but it shouldn’t alter your temperature in any way. Next, the warm gas mixes with air. The new gas mixture will have more heat than it had before, which will increase its average temperature a little bit. Probably not an easily measurable effect.
cheese_greater@lemmy.world 20 hours ago
As i supecter