S 4 E 12 Fooled By Spectrum

Very high frequency spectrum and the spectrum

Mathilde Hertz (understood the raven)

Gustav Hertz (Mathilde's uncle, won a Nobel Prize)

Carl Hertz (Mathilde's cousin, helped invent inkjet printing and the sonogram)

Heinrich Hertz (proved the spectrum--Mathilde's dad)

The Filter Bubble

First radio broadcast

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