User:John R. Brews/Miscellaneous: Difference between revisions

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{{Gallery-mixed
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|Note frequencies.png|Frequencies of various pure tones. The various ''A''-notes are a factor of two apart in frequency. Based on data from {{cite book |title=The Physics of Music and Color |author=Leon Gunther |url=http://books.google.com/books?id=4Apd-toEDcYC&pg=PA357 |chapter=Figure 11.2: Piano keyboard |isbn=1461405564 |year=2011 |publisher=Springer}}
|Note frequencies.png|Frequencies of various pure tones. The various ''A''-notes are a factor of two apart in frequency.
|Average CZ edits per day.PNG|[http://en.citizendium.org/wiki/File:Editsbyday30.png Data] generated by Aleksander Stos. Thirty-day moving average of edit activity on CZ
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|Classical mechanics timeline.PNG|Timeline for key scientists in [[classical mechanics]]
|Classical mechanics timeline.PNG|Timeline for key scientists in [[classical mechanics]]
|Average CZ edits per day.PNG|[http://en.citizendium.org/wiki/File:Editsbyday30.png Data] generated by Aleksander Stos. Thirty-day moving average of edit activity on CZ
|WP Articles.png|Number of articles on English Wikipedia vs. year. (Data from Wikipedia)
|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 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]
|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]

Revision as of 11:18, 17 June 2012

Frequencies of various pure tones. The various A-notes are a factor of two apart in frequency.
(PD) Image: John R. Brews
Frequencies of various pure tones. The various A-notes are a factor of two apart in frequency.
Timeline for key scientists in classical mechanics
(PD) Image: John R. Brews
Timeline for key scientists in classical mechanics
Data generated by Aleksander Stos. Thirty-day moving average of edit activity on CZ
(CC) Image: John R. Brews & Aleksander Stos
Data generated by Aleksander Stos. Thirty-day moving average of edit activity on CZ
Number of articles on English Wikipedia vs. year. (Data from Wikipedia)
(PD) Image: John R. Brews
Number of articles on English Wikipedia vs. year. (Data from Wikipedia)
Number of applicants for administrator privileges on English Wikipedia by year. (Data from Wikipedia.
(PD) Image: John R. Brews
Number of applicants for administrator privileges on English Wikipedia by year. (Data from Wikipedia.
Number of new accounts per month on WP over its lifetime. (Data from Wikimedia.)
(PD) Image: John R. Brews
Number of new accounts per month on WP over its lifetime. (Data from Wikimedia.)
New articles per day on English Wikipedia. Average drop in production is 135/year. Data from Wikimedia
(PD) Image: John R. Brews
New articles per day on English Wikipedia. Average drop in production is 135/year. Data from Wikimedia
Number of English WP contributors making 100+ edits/month by year. Average drop is 93/year. Data from Wikimedia.
(PD) Image: John R. Brews
Number of English WP contributors making 100+ edits/month by year. Average drop is 93/year. Data from Wikimedia.
Top and bottom envelope functions for a modulated sine wave.
© Image: John R. Brews
Top and bottom envelope functions for a modulated sine wave.
First six terms of Fourier series for sawtooth.
(PD) Image: John R. Brews
First six terms of Fourier series for sawtooth.
Musical clefs arranged on a stave.
(PD) Image: John R. Brews
Musical clefs arranged on a stave.
Envelope of a musical tone
(PD) Image: John R. Brews
Envelope of a musical tone
Approximate spectrum of four instruments playing A4: 440 Hz
(PD) Image: John R. Brews
Approximate spectrum of four instruments playing A4: 440 Hz
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