How does a thermos know to keep hot food hot and cold food cold....does it have a computer chip in it?!
Answers:
No,
it's the little guy / girl inside that lives their;
When you put something cold inside it turn thermostat down to make it even colder!.
When you put something hot in it, there body temp just makes it hotter, after that they turn the temp up
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it's the little guy / girl inside that lives their;
When you put something cold inside it turn thermostat down to make it even colder!.
When you put something hot in it, there body temp just makes it hotter, after that they turn the temp up
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The more advanced (modern) ones do!. Unfortunately this means some bugs still have to be worked out - sometimes a thermos can "crash" and warm up cold food or freeze hot food!. These instances are rare since they switched from Windows XP/Vista to Linux as their OS!.
There are microscopic pores inside each thermos that sense temperature and calculate how much heat or cold to emit!.
I have an old thermos with Windows 3!.1 in it and the response time is ridiculously slow!. I really need an upgrade, eh!? ;)
also, in case you were wondering, a thermos doesn't have to be recharged as it gets its energy from the warmth of whatever might be inside it!. The only time a thermos can run out is if you don't use it for literally years at a time, and I've only heard that happen once, but the dude managed to jump-start it with a 9-volt battery!.
One last thing: No, you can't install Solitaire on it!. (Yes, I spent an afternoon trying once!.)Www@FoodAQ@Com
There are microscopic pores inside each thermos that sense temperature and calculate how much heat or cold to emit!.
I have an old thermos with Windows 3!.1 in it and the response time is ridiculously slow!. I really need an upgrade, eh!? ;)
also, in case you were wondering, a thermos doesn't have to be recharged as it gets its energy from the warmth of whatever might be inside it!. The only time a thermos can run out is if you don't use it for literally years at a time, and I've only heard that happen once, but the dude managed to jump-start it with a 9-volt battery!.
One last thing: No, you can't install Solitaire on it!. (Yes, I spent an afternoon trying once!.)Www@FoodAQ@Com
It doesn't need a computer chip!. The thermos maintains the same temperature, whether it's hot or cold!. Pour hot coffee into the thermos and twenty-four hours later it will still be fairly warm!. Pour iced tea in the thermos and twenty-four hours later it will still be chilled!.
The thermos doesn't decide whether it's hot or cold, it just maintains the temperature it is given!.Www@FoodAQ@Com
The thermos doesn't decide whether it's hot or cold, it just maintains the temperature it is given!.Www@FoodAQ@Com
No; thermos bottles have been around a little longer than computer chips have!. Heat transfer occurs by 3 means: 1!. conduction, 2!. convection, and 3!. radiation!. Conduction means that heat energy spreads from a place of high temperature to one of lower temperature through direct contact with the surroundings!. A classic example is how you feel warm when you get in a hot bath!. Convection has to do with physically moving quantities of matter!. A stream of air blowing from a fan actually cools you two ways: through convection and conduction!. The air temperature being less than 98!.6 F; the more air in a certain amount of time you have convected (blown) at you, the faster the body can shed heat!. also, the cooling effect of a fan is accentuated by evaporation of perspiration from your skin (conduction)!. Water takes 540 kcal per mole to convert from a liquid to a vapor, and the vapor state is achieved at any temperature by molecules of water chemically diffusing from an area of greater water concentration (your sweat gland) to one of less (the air, if less than 100% relative humidity)!. Then there is radiation!. This is analogous to light shining!. Other forms of energy such as light, are converted to heat when they strike the surface of that object!. The sun's light does this when it hits the earth's surface!. An area covered in snow will reflect most of the light back into the air without converting it to heat, while a dark-colored surface such as earth, vegetation, etc!., more efficiently coverts some of that light to heat!. A thermos bottle has two layers!. The inner layer is fused to the outer shell only at the neck!. An almost-perfect vacuum is between the shells -- a space from which most of the air has been pumped out!. With no air molecules to conduct the heat through molecular collisions (conduction) from the inside out (with a hot drink inside) or from the outside in (with a cold drink), heat transfer can take place only through the neck area!. That is how the insulation of a thermos bottle works!.
If you have a cheaply-made, PLASTIC thermos bottle, here is what NOT TO DO!. Put ice-cold soda straight from a freshly-opened bottle in it, then put the top on tightly, hoping to enjoy it later!.
What'll happen, is the high pressure inside, from the CO2 in the cold soda coming out of solution, added to the pressure from the cold liquid eventually warming up, added to the low pressure on the outside of that inner shell, overcomes the strength of the inner shell and shatters it, and you have an outer thermos shell containing a mixture of instantly-flat soda, shards of shattered plastic, and millions of tiny flakes of silver paint!. Not too refreshing!.Www@FoodAQ@Com
If you have a cheaply-made, PLASTIC thermos bottle, here is what NOT TO DO!. Put ice-cold soda straight from a freshly-opened bottle in it, then put the top on tightly, hoping to enjoy it later!.
What'll happen, is the high pressure inside, from the CO2 in the cold soda coming out of solution, added to the pressure from the cold liquid eventually warming up, added to the low pressure on the outside of that inner shell, overcomes the strength of the inner shell and shatters it, and you have an outer thermos shell containing a mixture of instantly-flat soda, shards of shattered plastic, and millions of tiny flakes of silver paint!. Not too refreshing!.Www@FoodAQ@Com
A practical vacuum flask is a bottle made of glass, metal, or plastic with hollow walls; the narrow region between the inner and outer wall is evacuated of air!. It can also be considered to be two thin-walled bottles nested one inside the other, and sealed together at their necks!.
Using vacuum as an insulator avoids heat transfer by conduction or convection!. Radiative heat loss can be minimized by applying a reflective coating to surfaces!.
The contents of the flask reach thermal equilibrium with the inner wall; the wall is thin, with low thermal capacity, so does not exchange much heat with the contents, affecting their temperature little!. At the temperatures for which vacuum flasks are used (usually below the boiling point of water), and with the use of reflective coatings, there is little infrared (radiative) transfer!.
The flask must, in practice, have an opening for contents to be added and removed!. A vacuum cannot be maintained at the opening; therefore, a stopper made of insulating material must be used, originally cork, later plastics!. Inevitably, most heat loss takes place through the stopper!.Www@FoodAQ@Com
Using vacuum as an insulator avoids heat transfer by conduction or convection!. Radiative heat loss can be minimized by applying a reflective coating to surfaces!.
The contents of the flask reach thermal equilibrium with the inner wall; the wall is thin, with low thermal capacity, so does not exchange much heat with the contents, affecting their temperature little!. At the temperatures for which vacuum flasks are used (usually below the boiling point of water), and with the use of reflective coatings, there is little infrared (radiative) transfer!.
The flask must, in practice, have an opening for contents to be added and removed!. A vacuum cannot be maintained at the opening; therefore, a stopper made of insulating material must be used, originally cork, later plastics!. Inevitably, most heat loss takes place through the stopper!.Www@FoodAQ@Com
A thermos is two sheets of plastic that has some sort of insulator within!.
if you put something cold in the thermos is does not allow heat to get into the thermos!.
The opposite is true if you put hot soup in it!.!.!.if does not allow the heat to get out!.
Basic 5th grade science!.
Should have paid attention in class!. Www@FoodAQ@Com
if you put something cold in the thermos is does not allow heat to get into the thermos!.
The opposite is true if you put hot soup in it!.!.!.if does not allow the heat to get out!.
Basic 5th grade science!.
Should have paid attention in class!. Www@FoodAQ@Com
there is nothing in a thermos!. what ever the temperature of the food is is the temperature that the thermos keeps itWww@FoodAQ@Com
it doesnt like!.!.!.figure 'its hot so ill keep it hot!' or 'its cold!.!.!.gatta become a freezer!' it just doesnt let the temperature change!.!.!.it insulates everything and keeps the temperature insideWww@FoodAQ@Com
It's like my heart - when it's cold it stays that way for a long time!. When it's hot it burns with a passion so hot it could melt steel!. Guess which one you inspire in me!.Www@FoodAQ@Com
No!. It's insulated!. So whatever is cold stays cold and whatever's hot stays hot!.Www@FoodAQ@Com
!?!? A thermos is just insulated which means it either insulates the cold in or the heat from the outside air temps!. No computer chips just good old common senseWww@FoodAQ@Com
thermoses don't know anything they just have insulation that prevents the outside temperature from getting in!.Www@FoodAQ@Com
The thermos is just gifted that way!.Www@FoodAQ@Com
do men have computer chips in them!? know when to make a woman hot and when to be cold!?Www@FoodAQ@Com
Computer chip!? AWESOME!! I'd love to be able to go on facebook while eating some soup!. lol
no it doesn't!.Www@FoodAQ@Com
no it doesn't!.Www@FoodAQ@Com
nope insilationWww@FoodAQ@Com