|Is WiFi matter?|
|Question Date: 2016-01-25|
No, it is not. WiFi is composed of signals
traveling by electromagnetic waves. These
waves are the same kind of waves that make up the
light that we see, except that our eyes were not
built to "see" WiFi signals. We have structures in
our eye which can only see red, green, and blue
light. Red is at the bottom of the rainbow
spectrum of colors that we can see (color
corresponds to the wavelength, or frequency of
light), and WiFi would be way, way below red.
These waves contain energy, and in principle
energy can be converted into matter and vice
versa, but energy and matter are still
WiFi is not matter. Matter has mass. WiFi
is information transferred over radio waves. Radio
waves are part of the "electromagnetic
spectrum," which also includes visible light
(sunlight, red light, blue light, etc.) and
non-visible light (UV light, infrared radiation,
etc.). Usually if light is non-visible, it is
referred to as radiation, but these are just
names. The physics of light and radiation are
Light is energy and energy has no mass.
Thus, WiFi is energy and not matter.
WiFi is radio waves emitted by your wireless
router and by your computer. It's light. As such,
it would be better called energy instead of
Click Here to return to the search form.
Copyright © 2017 The Regents of the University of California,
All Rights Reserved.