Physics

In this video, a series of simulations explains how the microwave oven that we have at home warms/heats our food. The oven sets up a standing electromagnetic wave (typically in a wavelength of 10 to 12 cm) that is strongly absorbed by the water. The electric field changes as a function of position and the food must be rotated while cooking, otherwise, the portion that lies in a region where the electric field amplitude is small (zero at the nodes), will remain cold.