[ot] microwave and wifi

[Vu Pham]

On Mon, 2006-09-11 at 21:54 +0800, Man-wai CHANG wrote:
> What's the frequency of waves used in microwave oven? Power?
> What about that of Wi-Fi network? Power?

Wifi includes many different wireless standards : 802.11b, 802.11g,
802.11a, 802.11n ... b,g and n has the main frequency at 2.4Ghz, and a
at 5 Ghz. The power is 100mW at maximum, IIRC. The wifi devices work not
at only one frequency but many different frequencies ( called channels )
around the main frequency.

For the microwave, they work at 2.4Ghz also. I am not sure about the
power in microwave case, but I guess it should be much more than
100mW :)


Vu