如每日使用3小時電磁爐,電磁爐的幅射對人有沒有害??

Induction oven (電磁爐) utilizes a frequency of about 20~27 kHz in its heating element for cooking (notice that 50 Hz is only the power line frequency and is NOT the frequency used for induction heating).

The magnetic field so generated would largely be concentrated at the utensiles, which are made of ferromagnetic alloys and have high permeability to magnetic fields. The field strength falls off rapidly with distance away from the induction oven. At a distance of 30 cm (~1 foot) away, the magnetic field from the oven almost diminishes to zero.

Because human body is not ferromagnetic (with low permeability), unless a person stays over a long period of time at close distance (almost in contact) with the induction oven, the hazard from the magnetic field generated by an induction oven is minimal.

You may refer to the web-page below for more information:

http://theinductionsite.com/radiation.shtml

電磁爐是用50Hz的市電產生碰場，是極之低頻率的幅射，對人體不會有影響。而且差不多所有磁場能量都消耗在導磁的容器上。所以是不會有危險的。