Recorder Physics

Bibliography:
http://www.owlnet.rice.edu/~dodds/Fil...
http://www.flute-a-bec.com/acoustique...
https://bretpimentel.com/does-materia...
http://www.pslc.ws/macrog/kidsmac/pol...
http://newt.phys.unsw.edu.au/jw/clari...
https://www.yamaha.com/en/musical_ins...
https://physics.stackexchange.com/que...
http://isjos.org/JoP/vol3iss1/Papers/...
https://pages.mtu.edu/~suits/notefreq...
http://www.fomrhi.org/vanilla/fomrhi/...
http://kellerphysics.com/acoustics/La...

Gif of longitudinal wave:
By Lookang many thanks to author of original simulation = Juan M. Aguirregabiria author of Easy Java Simulation = Francisco Esquembre - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...