Why can boil eggs in a microwave oven?

The red and white whites contain a lot of water, and when heated quickly and expand rapidly, the internal pressure is large and the external size remains constant. So the eggs make a loud bang when put into the microwave.

Microwaves become popular with most families today due to their convenience and usefulness such as defrosting, heating, cooking food very quickly. It uses a shortwave or microwave wave of electromagnetic waves with a wavelength of about 12.24 cm, or with a frequency of about 2.45 GHz. With this type of wave, food can be absorbed, the energy of the wave is not enough to destroy the molecules inside the food to create substances harmful to health. Water, sugar and fats easily absorb this microwaves.

When microwaves penetrate deep inside food, energy is transferred to the water. Under the influence of magnetic electricity, the oxygen and hydrogen atoms make up the water molecule that changes extremely about 2.45 billion times in a second. This causes water elements to turn around, collide and rub to generate heat to heat food. The amount of heat generated can ripen food in a short time.The more water a food contains, the faster it will be cooked.

The case of cooked eggs can also explode when put into the microwave.

Solid or low-water mixtures such as glass, plastic and ceramics absorb very little microwaves so they are less heated. That's why we use these materials as containers for cooking in the microwave.

From the above principle, return to the egg case. When putting raw eggs in the microwave, whites and yolks contain plenty of water that is quickly heated and expands strongly; while the size of the eggshell does not change. The heat generated quickly in the egg will create a pressure from inside the outer shell, causing the outer layers to not expand as soon as it explodes. We can hear the popping noise, even the big pressure is explosive, unsafe.

If you want to boil eggs with a microwave , you can use a glass bowl and a special porcelain to pour water to add a little salt and drop eggs so that it is submerged . The mixture of water and salt heated by microwave waves will produce heat to help warm eggs not cause explosion.

In the case of cooked eggs can also explode when put into the microwave, because in the yolk and white still contains plenty of water.