i am going to do an experiment on what material would keep hot coffee warm in a plastic cup?
605853
Foil because its a solid sheet and reflects heat.\nThen fur as it will trap the heat thus letting as little as possible escape.\nLast felt because its porous and doesn't trap heat well.
967084
I would use a length of nichrome wire (see links below) stretched between a couple copper blocks. You could make some sort of pinch block out of the copper and connect a power supply to the copper. (or drill a hole through it with a set screw, tap a hole and us a pan head screw)  You will have to insulate the copper from the rest of the world so you don't short something out.  G-10 (a glass/epoxy resin) makes a good moderately high temperature insulator.  One of the contacts should be fixed and the other allowed to "float" and allow for changes in the length of the wire due to heating.  A spring could be used to provide tension or an air cylinder.  The power supply will depend on the length and diameter wire you choose.  If there is a problem with the electrical contacts heating up, you could run some cooling water through them.  Just drill a hole through it and 1/8 NPT pipe tape both ends.  You can plumb some water to it and it will keep the copper chilled.
31159
Polystyrene egg box.\nDistribute the quarters in the eggcups evenly to avoid capsize.
807714
It depends entirely on the temperatures of the all the components. Presumably you have liquid coffee, a coffee cup of any given material, the air temperature where you are making the coffee and the milk. So all these factors have an effect on each other as far as temperature is concerned. The second rule of thermodynamics is loosely but easily remembered by "Heat as a ruler flows from hotter to the cooler." So if your coffee is colder than your milk, the coffee gets warmer. If the air is colder than the milk, which is colder than the coffee, then the coffee will cool down super fast. If the mug is hot, it will offset the heat loss to the air and milk and so forth. The possibilities can be endless. but a basic answer is: If the coffee and mug are hotter than the milk and the air, and if the air is colder than the milk, then the coffee cools faster before adding the milk, heat flowing from coffee to the air. Adding milk warmer than the air slows the transfer down, as it has added temperature warmer than the air to the equation. If the milk is colder than the air then the heat exchange is speeded up.
816490
Its better to get a design engineering guide from one of the plastic raw material suppliers as modifying the melt flow index would change many other properties also. A manufacturer rather than a distributor would probably provide you the information more readily.
925341
Maybe a regular piece of paper, as long as you are right there to watch it and if it starts to burn hurry up and take it out.  It depends on the microwave and how old it is.  I have done it with mine and it was ok.  Be careful.
466868
try painting the cup black and setting it in the sun, perhaps setting it on a mirror
410488
My coffee mug is made from a ceramic material.
801436
Use specific heat capacities and latent heats of these materials along with your head to get water at 0C
562654
Okay, I'll try this one -\n\nRun this experiment twice (or more times), each time with a piece of metal having different density.  The metal piece should be of adequate size (a sewing needle isn't going to do it), it needs to be big enough to significantly affect the temperature of the water.  You will need to know the mass of the metal (i.e., weigh it) and have a thermometer capable of reading from room temperature up through boiling or so.  Please note this is not going to give you a highly accurate answer, but can give you a ballpark idea (I'm guessing you're probably not doing this in a 500 million dollar lab).\n\nThe procedure:\n\n1)  Measure and record room temperature as T1.\n\n2)  Weigh the metal, call it M1.\n\n3)  Bring a known quantity of water (weigh it, or measure it and convert to weight, call it M2) to a temperature just short of boiling (say 180F to 200F, use the same temperature for each run of this experiment).  Record the temperature as T2, and remove the heat source (take it off the burner, etc.).\n\n4)  Drop in a metal piece at room temperature.  Allow a couple of minutes for heat to exchange.  Make sure you use \nthe same amount of time for each run of this experiment.\n\n5)  Measure and record the new temperature of the water as T3.\n\n6)  Repeat with your other metal samples.\n\nYou can now estimate the specific heat capacity for each metal.  It will not be super-accurate (heat escapes your system, and temperatures won't have completely equalized), but should give you some idea.  Just assume all temperatures did equalize and that no heat escaped for calculational purposes.\n\nSince (you are assuming) the heat which left the water went into the metal, then the product of mass, specific heat capacity, and temperature change should be the same for both the metal and the water (but in opposite directions).\n\nThis means that:\n\n(M1)(c1)(T3-T1) = (M2)(cw)(T2-T3)\n\nwhere c1 is the specific heat capacity of the metal, and cw is the specific heat capacity of water (look it up on Google to get the units you need).\n\nSolving this, you get:\n\n......(M2)(cw)(T2-T3)\nc1 = -----------------\n........(M1)(T3-T1)\n\n(sorry about the dots, I'm trying to keep everything aligned)\n\nRepeat the calculations for each of the metals.\n\nYou will need to calculate (or look up) the densities of each of the metals.  Then, graph density vs. the specific heat capacities you calculated, and see if your hypothesis is true.\n\nHave fun!
70171
have you ever tried to pick up a hot pan on the stove by the metal handle, and burned yourself? That's thermal conduction. Similarly, pour a cup of hot coffee and try to pick it up by the cup, not the handle. It's too hot to touch. That's thermal conduction.
200374
Have you thought about purchasing some of that plastic sheeting and sealing it in something like that?  The plastic sheets seem to work well in protecting things like calendars and magazines, is relatively inexpensive, and doesn't cause any longterm damage.  Just be sure that if you do decide to use plastic to keep it stored someplace near room temperature so that it either does not get too warm and cause it to melt into the calendar or too cold and stick to it.
28381
Boil the water and catch the condensation on a sheet of metal foil and have it run off into a cup. Its pure water!
135825
Making a Maximus Cup of a Coffee Minus Bruticus
424118
Measure a suitable mass of liquid in say a Styrofoam cup (let's say 100 g). Place thermometer in cup along with heating coil. Be sure that resistance heater does not touch the sides of cup or the thermometer. Have ammeter in series with the resistance heater and voltmeter in parallel. Turn on heater and note the current, voltage and time to reach say 10 deg C above the starting temperature. Electrical energy in = heat energy gained by the system. Electrical energy = current x voltage x time (in seconds). Heat gained = specific heat of liquid x change in temperature x mass of liquid.
957197
put a heating pad on it, or use icy hot.
48836
I've heard that liquid fabric softener works! It also works for stained coffee pots!