I read from echiuroid to echovirus.
The full clip from American Pie can be watched here:
https://youtu.be/rvtBb1FFUa8
Just like most of Greek Mythology, the story of Echo the Nymph is sad.
https://en.wikipedia.org/wiki/Echo_(mythology)
Get out of the echo chamber if you can!
https://en.wikipedia.org/wiki/Echo_chamber_(media)
"echovirus" stands for "enteric cytopathic human orphan virus".
https://en.wikipedia.org/wiki/Echovirus
From the NIH, "The term 'orphans' is used to designate those viruses which cannot definitely be associated with any recognized disease syndrome."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2555328/
The word of the episode is "echo".
https://en.wikipedia.org/wiki/Echo
It seems like echo in a radio signal is literally just a radio signal bouncing off of an object and returning to the source that sent the signal which is RADAR!
https://en.wikipedia.org/wiki/Radar
Yes, of course ducks' quacks echo, but they are quite quiet.
https://www.theguardian.com/science/2003/sep/08/sciencenews.theguardianlifesupplement
Theme music from Tom Maslowski
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