Wifi is an energy field that is transmitted as waves. The waves have a
certain height, distance between them and travel at a certain speed. The
distance between wifi waves is shorter than that of radio waves and longer than
that of microwaves, giving wifi a unique transmission band that can't be
interrupted by other signals. These images show an “idealized” wifi data
transmitted over a band that is divided into different sub-channels, which are
shown in red, yellow, green and other colors.
The wifi pulses are shown here as multicolored spheres radiating out from
the source, near the right of the image. Wifi transmitters are basically an
antenna equipped with a transmission protocol that splits the frequency band
into several segments, referred to as channels. Data can be transmitted over
each channel or in order to send and receive greater quantities of data at
faster rates. Although color represents its own unique, visible segment of the
electromagnetic spectrum, we use red, orange, yellow and other colors to show
the invisible wifi channels that make up the overall wifi signal. Wifi fields
are usually spherical (like the one here) or ellipsoidal and extend about 20-30
meters, assuming a typical off the shelf wifi box.
The illustrations were produced with the help of M. Browning Vogel.
She has a Ph.D. in Astrobiology, worked at NASA Ames for five
years, and now teaches science at the University level.
Nickolay
Lamm
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