|
|
Use a laptop as a mobile wireless power meter
They're not microwaves. They're radio waves. Microwaves would cook you!
Use a laptop as a mobile wireless power meter
Actually, they are microwaves, and, interestingly, they are at almost the same frequency (2.45 GHz) as those in your microwave oven. I'm not sure why that band was chosen.
But, in any case, the power present in your oven is in the hundreds of watts to kilowatts, whereas the power level sitting a metre away from a strong wireless router is less than -20 dBm, which is 0.00001 W. The power from the router I'm connected to now is -84 dBm, which is less than 0.00000000001 W. So we're probably OK.
Use a laptop as a mobile wireless power meter
Just because EMR is in the microwave band, doesn't mean it will warm food. The 2.4 GHz and 5 GHz frequencies that wireless routers operate on are actually in the microwave band of 300 MHz to 300 GHz, the microwave band is a subset of the radio band of 3 kHz to 300 GHz.
Use a laptop as a mobile wireless power meter
Only microwaves of a specific frequency warm food, because the energy per microwave photon corresponds to a ro-vibronic energy transition in the water molecule.In fact, microwaves of anywhere from 1 GHz to a few hundred GHz will warm food. See this page for far too much detail. I just thought it odd that the frequency of a microwave oven coincided with channels 7, 8 and 9 of the 802.11 standard. Even though the power levels may be way too low to heat anything (or anyone), surely you'd choose a band far away from any commonplace, powerful source like a microwave oven for the sake of interference? |
SearchFrom our Sponsor...Latest Mountain Lion HintsWhat's New:HintsNo new hintsComments last 2 daysLinks last 2 weeksNo recent new linksWhat's New in the Forums?
Hints by TopicNews from Macworld
From Our Sponsors |
|
Copyright © 2014 IDG Consumer & SMB (Privacy Policy) Contact Us All trademarks and copyrights on this page are owned by their respective owners. |
Visit other IDG sites: |
|
|
|
Created this page in 0.13 seconds |
|