電磁爐同微波爐對人體傷害比較

Microwave oven and induction stove work on different principles. In a microwave oven, microwave (electromagnetic wave of frequency 2.45 GHz) is produced by a magnetron and emitted within the oven cavity. The microwave casues water molecules in food to vibrate, thus heating up the food.

The danger of microwave is mainly on its heating hazard. That is, it casues over heating of the skin if the skin is exposed to microwave. Therefore, by staying suitable distance from the microwave oven could avoid such hazard.

Induction stove works on the principle of electromagentic induction. The frequency used in the stove is about 27 kHz, much much lower than that used in microwave oven.

Such low frequency (even lower than commercial AM radio broadcasting) signal could hardly radiate out in the form of waves from the stove and the direct heating effect it casued to persons staying nearby is mimimal.

Electromagnetic waves from these ovens and stoves are non-ionizing in nature, unlike ionizing radiations like X-rays and gamma-rays, they cannot cause cancer in human.

微波爐係用幅射將水加熱
佢有度門係阻擋幅射,企係微波爐前面唔太好

電磁爐傷害少d

At first, there is radiation full in all space, the sun and etc. It is hard to say is that hazardous to health for so general radiation.

The use of the door of microwave oven is used to block all microwave generated in the microwave oven. While the induction oven do not generate radiation in the same way as microwave oven. Its radiation is generated similar to that of transformer. So how do you feel that level of hazardous from the radiation from transformer?

The induction oven generate heat on the cooker by inducing current on the cooker by a varying magnetic field, that is similar to that of the transformer. The wavelenght of its radiation is much much longer than that of microwave oven, the energy carried in the radiation is much lower than that of microwave oven.

2008-11-18 13:01:15 補充：
Assume you use them in proper way, they won't be harzardous to your health.

2008-11-18 13:01:20 補充：
If you do something stupid, like force to use the mircowave oven without closing the door. You will be heated up by the microwave oven. While the induction oven will not heated you up directly unless you put yourself on a metal and put on the oven.