How does food get crispy in the microwave?
Things like hot pockets and microwave pizzas use what is called a susceptor (usually in the form of a sleeve or container). These susceptors convert microwave energy into heat, which help crisp up food in the microwave, countering the effects of sogginess that is synonymous with microwave ovens.
For more information: http://en.wikipedia.org/wiki/Susceptor
All of Sterlite food storage items are microwave safe. They are designed to reheat food in the microwave. Use caution when reheating food high in sugar or fat as they can cause damage to microwave safe containers. See microwave manufacturer's instructions for information regarding the use of microwave safe containers in your microwave."
Can you leave plates of food to be eaten later on-top of a microwave if the microwave is used in the mean time will it not keep reheating the food on top of the microwave?
You should never leave a metal spoon in a microwave, and expect to have a working microwave later on. As far as food poisoning, that usually comes from contaminated food, improperly prepared food, etc. There hasn't really been any reports of cases involving leaving a spoon in food in a microwave leading to food poisoning. However, if in doubt, see a doctor.
Why crispy food become soft when let in the open and only retain their crispiness only when kept in airtight tins?
A Grill Microwave Oven has a grill placed inside the cavity of oven which helps in browning and crisping of the food. This grill is not present in a Solo Microwave Oven. Hence Solo Microwave Ovens are only capable of reheating the food and for general cooking. Grill Microwave Oven is used for preparing crisp food items.
Which element in the microwave heats the food and is it good for your health to eat food made in a microwave?
Microwave ovens have a "part" or device inside them called a magnetron. The magnetron is a microwave generator, and when we energize it, it generates electromagnetic waves at fairly high power (several hundred watts) and at a microwave frequency (about 2450 megaHertz). The non-ionizing electromagnetic waves or rays generated by the magnetron cause the bonds between hydrogen and oxygen atoms in water molecules to "vibrate" sympathetically with the microwave radiation. The result is that the…