Project Science Of Electric Guitar: we did wave interference on paper, just estimating dots, then fired up an old school oscilloscope with two signal generators and nailed the same pattern by fluke picking two musical notes. Then we did some soldering, cos we're going to build a proof-of-concept amp. Best first-go soldering I've seen.
I'm learning so much from this. Classic "you don't understand it until you can explain it" stuff.
Today was a review of the work of John Deacon (electrical engineering and the legendary "Deacy Amp"), and Brian May's work on spectroscopy, and the similarities between sound waves, electrical waveforms, and light waves.
Then we started our amp: jack connection wires and input capacitor soldered into place. Next week is the transistor...
I'm surprised to hear beats, given that I don't think I've seen destructive interference of nearby peaks in spectrum ever. Where does this difference come from?
@robryk It's nanometer wavelengths converted to Hz sine waves, so not strictly comparable, I just liked the way the numbers matched up. But yeah, the beat frequencies were a lovely surprise, mostly down to the main ~100s nm optical range being tight compared to the 20-20k range of human hearing.
@_thegeoff wait, but didn't this map frequencies to (some multiple) of their inverses?
