[Chugalug] wireless routers

Dan Lyke danlyke at flutterby.com
Fri Nov 22 19:43:22 UTC 2013


On Fri, Nov 22, 2013 at 11:37 AM, John Aldrich <jmaldrich at yahoo.com> wrote:
> Two questions...first, where does one find out the wavelength of the radio
> signal and second, if you're using a multi-band radio, does that mean
> multiple wavelengths?

WARNING: SMARTASS ANSWER FOLLOWS: 2.4GHz is used for WiFi because it's
the unlicensed frequency space set aside for microwave ovens. You
could either use arithmetic, light and therefore radio waves travel at
299,792,458 meters per second, divide by 2.4 billion, you get
.1249blablabla meters, or just under 4 3/4", or you could derive it
experimentally:

http://www.physics.umd.edu/icpe/newsletters/n34/marshmal.htm
http://morningcoffeephysics.com/measuring-the-speed-of-light-with-chocolate-and-a-microwave-oven/

Dan


More information about the Chugalug mailing list