Can Somebody Explain Temperature To Me?

15 years ago

There is latent heat, but that doesn't sound like the case.

However, if you have a dark colored roof, it will absorb a LOT of heat.

Your refrigerator, hot water heater, even the air conditioner generate heat. Any appliance that's plugged in gives off some heat.

Also, the sun may come in through the windows, and not escape. Kind of like a mini greenhouse effect.

There's a chance that one of the thermometers is not giving an accurate reading.

Those are the thoughts that came to mind.

All the best,
Michael

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Steven Wagenheim

15 years ago

Originally Posted by Michael Oksa

There is latent heat, but that doesn't sound like the case.

However, if you have a dark colored roof, it will absorb a LOT of heat.

Your refrigerator, hot water heater, even the air conditioner generate heat. Any appliance that's plugged in gives off some heat.

Also, the sun may come in through the windows, and not escape. Kind of like a mini greenhouse effect.

There's a chance that one of the thermometers is not giving an accurate reading.

Those are the thoughts that came to mind.

All the best,
Michael

Thanks Michael. Does the reverse hold true in the winter for why it
doesn't get as cold inside as out even if we turn the heat off?

Actually, no where near as cold...thank goodness.

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Dan C. Rinnert 15 years ago

Originally Posted by Michael Oksa

There's a chance that one of the thermometers is not giving an accurate reading.

You mean like mine?

Al Gore's Thermometer

That picture was taken in the middle of winter and the thermometer is on the outside of the window. You can see the snow on the ground and even an icicle. I can tell you that it was no where near that warm outside.
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Michael Oksa

15 years ago

Well, that accounts for some of it.

Most homes have some insulation that traps heat.

Bodies give off heat.

But, you are also surrounded by walls. So there's no wind to make it feel colder.

All the best,
Michael

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Michael Motley

15 years ago

Originally Posted by Steven Wagenheim

Okay, I tried an experiment today.

I cranked the central air all the way up and cooled the house off to 70 degrees.

Okay, I then kept an eye on the house temperature as the outdoor temp
began to rise.

The outdoor temp this morning was 66 degrees.

It is currently 70 degrees. That is the highest it has been all day.

Yet the indoor temp is now 74 degrees.

How is this possible when the outdoor temp never got above 70?

The only things I have on in the house that generate any heat at all are
the lights and the computer.

Can they actually increase the house temp by 4 degrees?

Can anybody explain this to me?

Thanks.

uh, you're producing heat on your own.

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Michael Oksa

15 years ago

I notice the temp goes up at home whenever I start talking. My wife says it has something to do with "hot air"!?!

~M~

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mbenton

15 years ago

Dan, the thermometer is in the sun and there probably is no wind to speak of.

Steven, Earth is a crust around a hot molten core. It may be heat seeping through your floors...

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Killer Joe 15 years ago

Steve,

The only thing you changed was the temp of the air, not the mass of the building and its' contents. That takes days.

KJ
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- Steven Wagenheim 15 years ago
  
  Originally Posted by Killer Joe
  
  Steve,
  
  The only thing you changed was the temp of the air, not the mass of the building and its' contents. That takes days.
  
  KJ
  
  Okay, in English.
  
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  Dan C. Rinnert 15 years ago
  
  Originally Posted by Steven Wagenheim
  
  Okay, in English.
  
  When you heat a frying pan on a gas burner, the air around the burner will be hot before the pan itself will be.
  
  Basically, that's how it would work in your house. You can heat (or cool) the air faster than you can change the temperature of the walls and other solid objects in the house, which themselves may radiate heat and affect the ambient temperature.
  
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  Loren Woirhaye 15 years ago
  
  air movement outdoors may be reducing the heat. The outdoors,
  and everything sitting in them (like your house) is mostly
  warmed by the sun according to the directness of the
  light. Thus in winter when the sun strikes your area at
  a shallower angle you get less heat there too.
  
  Inside your house the air may be moving around a lot less than
  outside, so air movement isn't dispersing the heat much nor
  forcing hot air upwards as much, since it's sort of hitting the
  ceiling and lingering there, waiting for air movement to come
  along and cool it down.
  
  Earlier posters noted your house insulation may be harboring
  heat and gradually releasing it. That's plausible to me. Also
  your roof may be absorbing quite a lot of heat from the sun
  and passing some of it to the inside.
  
  Probably a combination of factors like these account for
  the difference. It's pretty observable, even without AC,
  than if, in the hot summer, you close your windows as the
  day heats up your dwelling stays cooler than the outside...
  until eventually if the day is hot enough it makes sense
  to open the windows to benefit from the cooling effect of
  airflow through them.
  
  Bodies put off heat. Pets do. Refrigerators do too. It does
  add up a bit. Did you know a guitar heats up when you
  play it? That's why the sound changes a bit. Not just from
  being handled, the heat comes from the energy put into
  the instrument by plucking the strings.
  
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Dave Patterson

15 years ago

If you started your day staring at your thermometer while standing and later got tired and continued staring at it from a sitting position then I'd say it only APPEARED to be a four degree difference due to the angle.

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gareth

15 years ago

Its the hot air you released your self

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Gareth M Thomas
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Auckland, New Zealand

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HeySal

15 years ago

LMAO - Gee Ken, this may seem like a very strange question, but do you still know your ancestor's language? I'm not sure that a person of European extraction can understand something so relationally oriented!

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Beyond the Path

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myob 15 years ago

This phenomena is explained by a more thorough understanding of the Zeroth Law of Themodynamics.

You see, two systems are said to be in thermal equilibrium when both of the systems are in equilibrium, and they remain in equilibrium when they are brought into direct contact, where 'contact' is meant to imply the possibility of exchanging heat, without any intermediary boundaries such as insulation. Thermal equilibrium is thus achieved only under the following ideal conditions:

1 Reflexive: Any system is in thermal equilibrium with itself;
2 Symmetric: if system A is in thermal equilibrium with system B, then it is also the case that B is in equilibrium with A;
3 Transitive: It is an empirical fact that if system A is in thermal equilibrium with system B, and system B is in thermal equilibrium with system C, then system A and system C are also in thermal equilibrium.

Hence thermal equilibrium between systems is an equivalence relation, notwithstanding an insulation barrier which is the substance of the zeroth law of thermodynamics. This empirical principle shows quite simply that we can define the "temperature function" central to our everyday conception of heat.

The zeroth law of thermodynamics, however does not apply to Steve's house. Sorry.
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- Killer Joe 15 years ago
  
  It's fun watching this tread and the responses. Two of the US Patents I'm listed as an inventor on are related to containers that use exothermic/endothermic reactions as a way to heat/cool the contents of the container.
  
  If Steve really wanted a detailed answer to his question I'm sure I could put him on overload.
  
  But I'll just save the keystrokes for now.
  
  And fusion is not an exothermic reaction although it does produce heat.
  
  KJ
  
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  KenThompson 15 years ago
  
  Originally Posted by HeySal
  
  but do you still know your ancestor's language?
  
  Keyu. Chahta ak akostinincho, ak akoanumpoli.
  
  Et c'est finis, je suis fatigué de certains types de personnes ici.
  
  Au revoir.
  
  Thanks
  
  2 replies
  
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  Killer Joe 15 years ago
  
  Originally Posted by KenThompson
  
  Why is it fun?
  
  All the threads in this forum are fun to watch.
  
  This one's no different.
  
  KJ
  
  Thanks
  
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  seasoned 15 years ago
  
  Originally Posted by KenThompson
  
  Et c'est finis, je suis fatigué de certains types de personnes ....
  
  SAME HERE! Talk about EXHAUSTED! I was watching a show today, and this guy buts in and THAT tired me out! How was that news?
  
  Oh well, I've said my fill. Je suis fini aussi! Pardonne moi.
  
  Steve
  
  Thanks
  
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seasoned

15 years ago

ALSO, insulation can contain heat, sun can create heat, and wind/humidity outside can LOWER the temperatire there without doing so inside. And YES, YOU are a heat source ALSO! There is ALSO the difference in pressure.

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Can Somebody Explain Temperature To Me?

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