The traditional and most ancient way to warm up cold objects is to make a fire and place them in or near it. If these are food, then they were placed in some container with water and placed on fire. An open flame is not always available in modern living conditions, so knowledge about how to heat up cold objects without using a combustion reaction will not be superfluous.
Instructions
Step 1
Use an electric stove. If it is of an inductive principle of action, then it can only act on those objects that are made of metals with magnetic properties. For example, dishes made of iron or with a matching bottom.
Step 2
Immerse the product or item in a container of water, heating it with an electric boiler.
Step 3
Place the cold one in the microwave and turn it on. Metal objects or those with metal spraying cannot be placed in it, since the high-frequency inductor of the stove will fail. However, products containing some water or containers with water poured into them will be heated. The thing is that only water is heated, and already it gives off heat to objects that come into contact with it.
Step 4
Turn on the heating pad after wrapping a cold object. In the absence of electricity, you can use a salt or other heating pad on a chemical principle of action.
Step 5
Draw hot water from the tap into a container and warm cold water in it. If you need to heat something hydrophobic, then first place it in a sealed plastic bag and immerse it in water. As the water cools down, add a fresh batch of hot water to replace it. This can be used to thaw and reheat frozen food, for example. If a geothermal source is available to you, use hot water from it.
Step 6
Use a magnifying lens to focus sunlight on a cool, solid object. Heating water in this way is very problematic. But if you heat the pot, then the water in it will gradually heat up. This method will take time and a lot of patience.
Step 7
Wrap the item with plastic or cloth. They should be as dark as possible. Place in direct sunlight. This method is good in places with high solar activity.
Step 8
Place the heating to be heated on a hot radiator and leave it on for a while.
