External Links

Here are some useful links that, if you like the way this site is written, you
will probably like these as well. Some of them have a strong connection to the Fourier
Transform, some of them less so.
All types of antennas are classified according to the frequency range
they operate in. For instance, low frequency satellite dishes are much different than wifi antennas,
which operate over a relatively small distance. The very fundamentals of radio information exchange
is based on the idea that messages can be divided into separate frequencies and sent indpendently;
as such the whole wireless communications field rests upon the ideas of Fourier in some sense.
This site also describes the technicalities of antennas, including
VSWR and
Smith Charts.
Maxwell's Equations are the fundamental laws that govern all of Electromagnetics,
which is the study of Electric and Magnetic Fields. It is well known that the properties
of Electromagnetic Waves behave differently at different frequencies - for instance,
as far as human scales are concerned, visible light travels in a straight line whereas
low frequency radio waves (which are EM waves just like light) experience diffraction and
wrap around objects. The Fourier Transform is applied to Maxwell's Equations
by simplifying some of the derivatives in the equations. Particularly, if you
limit your consideration of the E&M fields to sinusoids of a single frequency (which we know from Fourier
Theory that is ok - since all waveforms are the sum of sinusoids), and because
Maxwell's Equations are linear - all the time derivatives in Maxwell's Equations
can be replaced by
Have you ever looked up at the sky and asked yourself why the sky is not red, or black? It's not
an easy question to answer. But the sky is blue. Part of the mystery is solved by noting that
the white light from the sun can be decomposed into the sum of many different colors of light -
blue, red, green, etc. This can be shown with a simple prism that divides light into its rainbow
constituents. In some sense, this is exactly a Fourier Transform then - we can see the components
that make up the total signal! This site is a good read for understanding one of the best
questions of all time.
UsetheBitcoin.com is a site that explains how the bitcoin works in the simplest way possible. It also
gives some analysis on whether the bitcoin is over- or undervalued, along with a discussion of the latest
bitcoin news.
This site relates to remembering when the clocks move forward or back in most of the world,
for some archaic reason. OK, I'm not entirely sure how exactly this relates to the
Fourier Transform. I just have trouble remembering when to spring forward and fall back.
So there is an email list you can sign up for to get an email.
People like to talk to Google like they talk to a person. So here is a website that has each page answer
a simple question that begins with "Where are the ___"?, for example,
Where are the Hamptons?. This site may not be
directly related to Fourier Transforms, but at least you can find where some things are that you didn't
know before.
This website started after a conversation with a friend on how you can get herpes? From sharing a drink, toilet
seats, shaking hands? This website has that info in an accurate format.

**Antenna Theory**.com
*i*2*pi*f*, which is the time derivative multiplier
of a sinusoidal function
oscillation at frequency *f*.
**When Does The Time Change?**.com
**Where-Are-The**.com

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