These include cookware such as glass, plastics and ceramic containers that are labeled as good to be used on microwave ovens. Do not use containers that are intended for refrigeration because this will just melt once it is put inside the oven. An example of this is margarine or a butter tub. Chemicals present in this kind of container will just contaminate your food. On the other hand, if you need one that is more powerful and has more features, over the range microwaves are more your type. Aside from the advanced features, they are built in with fan and save counter space. Some new generation microwave ovens are even more advanced that you can cook foods like popcorn, frozen entrees and even pizza. This time, he put popcorn kernels near the tube and he was very surprised to see the popcorn crack and sputter. Thereafter, other experiments were conducted which led to the conclusion that the microwave's temperature can be escalated which cooked food faster. The households began employing microwave ovens in the year 1967. A convection microwave oven, on the other hand, is a combination of a microwave oven and a convection oven. It has a gamut of functions like grilling, defrosting, and cooking. Size There are two types according to size and where the microwave is placed in the kitchen. The most common is the countertop microwave, which as the name suggests, is to be placed on the counter. Hence, parents should be aware of the proper usage of microwaves, as well as the red signals that lead to accidents, in order to keep their kids safe from the possible hazards. Keep Baby's Milk Away From Microwaves A study in Minnesota confirmed the risks that are involved in cooking baby's milk in microwaves. You never know what may happen afterwards. Keep out of children's reach. Instruct them not to operate the microwave on their own especially if they are still too young to do so. Heating liquid or water should be done with precaution as overheating can cause the water to explode and give you serious burns and scalds.