View source for User:John R. Brews/Miscellaneous

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|Note frequencies.png|Frequencies of various pure tones. The various ''A''-notes are a factor of two apart in frequency.
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|Average CZ edits per day.PNG|Thirty-day moving average of edit activity on CZ. [http://en.citizendium.org/wiki/File:Editsbyday30.png Data by Aleksander Stos.] 
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|Classical mechanics timeline.PNG|Timeline for key scientists in [[classical mechanics]]

|WP Articles.png|Number of articles on English Wikipedia vs. year. (Data from Wikipedia)

|Applicants for adminship.png|Number of applicants for administrator privileges on English Wikipedia by year. (Data from [http://en.wikipedia.org/wiki/Wikipedia:Unsuccessful_adminship_candidacies_%28Chronological%29 Wikipedia]

|WP New Editors.png|Number of new accounts per month on WP over its lifetime. (Data from [http://stats.wikimedia.org/EN/TablesWikipediaEN.htm Wikimedia].)

|WP New articles per day.png|New articles per day on English Wikipedia. Average drop in production is 135/year. Data from [http://stats.wikimedia.org/EN/TablesWikipediaEN.htm Wikimedia]

|Number of very active WP contributors.png|Number of English WP contributors making 100+ edits/month by year. Average drop is 93/year. Data from [http://stats.wikimedia.org/EN/TablesWikipediansEditsGt100.htm Wikimedia].

|Blocks per day 2012.png|Blocks per day in 2012 on English Wikipedia. Data from [http://en.wikipedia.org/wiki/Special:BlockList Wikipedia].

|Signal envelopes.png|Top and bottom envelope functions for a modulated sine wave.
|Sawtooth Fourier series.png|First six terms of Fourier series for sawtooth.
|Musical clefs.png|Musical clefs arranged on an 11-line ''grand staff''.
|Sound envelope of a musical note.png|Envelope of a musical tone
|Instrument spectra (A4-440Hz).png|Approximate spectrum of four instruments playing A4: 440 Hz
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