I can provide information about microwaves and how they function.
Microwaves are a type of electromagnetic radiation with wavelengths ranging from about one millimeter to one meter. They are used in microwave ovens to heat food by producing thermal energy. When you turn on a microwave oven, it emits microwaves that are absorbed by water molecules, fats, and sugars in the food, causing them to vibrate and generate heat.
Since microwaves are a form of electromagnetic radiation, they do not have a physical presence that you can feel when they enter your house. However, you may experience the effects of the microwave's heating capabilities when using the oven, such as feeling the warmth of the food or noticing the steam produced during the cooking process.