= Hertz electromagnetic wave experiments
{c}
{wiki}
https://en.wikipedia.org/wiki/Heinrich_Hertz#Electromagnetic_waves
<Heinrich Hertz>'s main initial experiment used a <spark-gap transmitter>. It is not something that transmits recorded sounds like voice: it only transmits noisy beeps. And as such was used for <wireless telegraphy>.
\Video[https://www.youtube.com/watch?v=9gDFll6Ge7g]
{title=Hertz Experiment on Electromagnetic Waves by <Ludic Science> (2015)}
{description=
Simplified recreation with cheap modern equipment. Uses as <transmitter> power source both:
* a <piezo igniter> from a <barbequeue lighter>
* a more powerful home-made <transformer>
and the signal is observed on the <receiver> with a <neon lamp>
}
\Video[https://www.youtube.com/watch?v=UN37QEmW_ns]
{title=Hertz and <Radio waves> Explained by PhysicsHigh (2016)}
{description=Simple schematics showing the basics of the experiments. No choice of components rationale.}
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