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- 19:34, 2 January 2009 Army1987 talk contribs uploaded File:Cabibbo angle.png ({{Information |Description=An illustration of the Cabibbo angle |Source=I created this work entirely by myself. |Date=~~~~~ |Author=~~~ |other_versions= }})
- 19:19, 19 December 2008 Army1987 talk contribs uploaded File:Checkerboard gamma test.png ({{Information |Description=A gamma test: the uniform squares should have the same brightness as the surrounding dither. Doesn't work well on CRT displays because they have problems with the checkered pattern. |Source=I created this work entirely by myself)
- 15:42, 6 December 2008 Army1987 talk contribs uploaded File:220 Hz anti-aliased sawtooth wave.ogg ({{Information |Description=5 seconds of a 220-hertz anti-aliased sawtooth wave |Source=I used the program at User:Army1987/waveforms.c, with <source lang="bash">gcc -DWAVEFORM=3 -std=c99 -lm waveforms.c -o sawtooth ./sawtooth | oggenc -r -C 1 - -o saw)
- 15:38, 6 December 2008 Army1987 talk contribs uploaded File:220 Hz anti-aliased square wave.ogg ({{Information |Description=5 seconds of a 220-hertz anti-aliased square wave |Source=I used the program at User:Army1987/waveforms.c, with <source lang="bash">gcc -DWAVEFORM=2 -std=c99 -lm waveforms.c -o square ./square | oggenc -r -C 1 - -o square.og)
- 15:32, 6 December 2008 Army1987 talk contribs uploaded File:220 Hz anti-aliased triangle wave.ogg ({{Information |Description=5 seconds of a 220-hertz anti-aliased triangle wave |Source=I used the program at User:Army1987/waveforms.c, with <src lang="bash">gcc -DWAVEFORM=1 -std=c99 -lm waveforms.c -o triangle ./triangle | oggenc -r -C 1 - -o triang)
- 15:28, 6 December 2008 Army1987 talk contribs uploaded File:220 Hz sine wave.ogg ({{Information |Description=5 seconds of a 220-hertz sine wave. |Source=I used the program at User:Army1987/waveforms.c, with <source lang="sh">gcc -DWAVEFORM=0 -std=c99 -lm waveforms.c -o sine ./sine | oggenc -r -C 1 - -o sine.ogg vorbisgain sine.ogg<)
- 12:03, 15 June 2008 Army1987 talk contribs uploaded File:Gaussian blur before downscaling.png ({{Information |Description=Two images of the Flag of the Commonwealth of Nations, reduced from 2048×1024 to 128×64. The images were resized with cubic interpolation, but a Gaussian blur with ''σ'' = 32px was applied to the bottom image before d)
- 17:03, 8 June 2008 Army1987 talk contribs uploaded File:Largest known prime number by year.svg ({{Information |Description=Number of decimal digits in the largest known prime number by year, since electronic computers began to be used. |Source=Made with gnuplot from the data at http://primes.utm.edu/notes/by_year.html |Date=~~~~~ |Author=~~~ }})
- 23:39, 1 June 2008 Army1987 talk contribs uploaded File:Terzosuono.ogg ({{Information |Description=Two tones which start in unison at 600 Hz, but, while the left channel stays at a constant pitch, the frequency of the right channel rises by 5 hertz per second. Firstly, a beat (acoustics)ing is heard, then a)
- 14:52, 16 May 2008 Army1987 talk contribs uploaded File:Relativity of simultaneity (color).png ({{Information |Description=This picture illustrates the relativity of simultaneity in Lorentz transformations. The three colored reference frames are associated to three different observers in relative motion along the ''x'' axis. The ''y'' and '')
- 10:50, 20 March 2008 Army1987 talk contribs uploaded File:Glider stat.png ({{Information |Description=A stationary image of a Glider (Conway's Life), as the animated one could be distracting to use in text |Source=self-made |Date=2008-03-20 |Author=~~~ }})
- 18:31, 22 January 2008 Army1987 talk contribs uploaded a new version of File:Tricorn.png (Downsized version, as the former was too large for the thumbnail maker (> 12.5M pixels))
- 13:50, 22 January 2008 Army1987 talk contribs uploaded a new version of File:ExtremeValueTheorem.png (A continuous function.)
- 23:54, 21 January 2008 Army1987 talk contribs uploaded a new version of File:ExtremeValueTheorem.png (A continuous function, showing the extreme value theorem. The maximum is shown in green and the minimum in blue. I generated it with this Python script: <source lang="Python"> #!/usr/bin/python from random import * k = 0 for i in range(100000): k +=)
- 15:45, 18 January 2008 Army1987 talk contribs uploaded File:Lipschitz continuity.png ({{Information |Description=A Lipschitz continuous function. There is a double cone (shown in green) whose vertex can be translated along the graph of the function, so that the graph will always be entirely within the cone. |Source=self-made |Date= |Locat)
- 10:38, 13 May 2007 Army1987 talk contribs uploaded File:Il sogno del menestrello.ogg (== Summary == Excerpt from "Il sogno del menestrello", from the album ''Acqua e terra'' by the Italian folk band I ratti della Sabina. This is a low quality (64 Kbps) rendering of a short sample from the song, used for demonstration only. It's 23)
- 14:21, 9 February 2007 Army1987 talk contribs uploaded File:Tricorn.png (The tricorn (a fractal similar to the Mandelbrot set), plotted in the area [−2, 2) × [−2, 2). The value of each pixel equals 255 minus the number of iterations needed before the absolute value of z becomes larger than 2, calculated at the upper left)
- 11:45, 9 February 2007 Army1987 talk contribs uploaded File:Tricorn.png (The tricorn (a fractal similar to the Mandelbrot set), plotted in the area [−2, 2] × [−2, 2]. The value of each pixel equals 255 minus the number of iterations needed before the absolute value of ''z'' becomes larger than 2, calculated at the upper l)
- 18:42, 8 February 2007 Army1987 talk contribs uploaded File:Srgbnonlinearity.png (Three solid squares surrounded by dithers which, in the sRGB color system, should be equally bright. The first square has linear brightess of 0.25 and is surrounded by a dither of 0 and 0.5; the second one is 0.5 and is surrounded by 0 and 1; the last is)
- 20:18, 21 January 2007 Army1987 talk contribs uploaded File:ExtremeValueTheorem.png (A continuous function on a closed interval, showing the extreme value theorem. The function is the integral of a piecewise continuous function which, on each one of 256 very small interval, takes a normally distributed randomly choosen value. I p)
- 18:50, 14 January 2007 Army1987 talk contribs uploaded File:Alcor small.png (Optical binary star Mizar and Alcor. Cropped from Image:Dipper.jpg.)
- 13:41, 5 November 2006 Army1987 talk contribs uploaded File:Paperball.jpg (A crumpled paper ball made from an A4 sheet.)
- 21:08, 29 October 2006 Army1987 talk contribs uploaded File:I Ratti Della Sabina - Chi arriva prima aspetta.ogg (Sample of "Chi arriva prima aspetta" from the 2005 album ''A passo lento'' by the Italian folk rock band I Ratti Della Sabina. The length of the sample, 23.6 s, equals 10% of the length of the song (3 min 56 s). Encoded with Variable Bitrate Ogg Vorbi)
- 20:19, 29 October 2006 Army1987 talk contribs uploaded File:I Ratti Della Sabina - La morale dei briganti.ogg (Sample of "La morale dei briganti" from the 2003 album ''Circobirò'' by the Italian folk rock band I Ratti della Sabina. The length of the sample, 28.8 s, equals 10% of the length of the song (4 min 48 s). Encoded with Variable Bitrate Ogg Vorbis at)
- 21:13, 20 October 2006 Army1987 talk contribs uploaded File:I Ratti Della Sabina - Il funambolo.ogg (Sample from the song "Il funambolo", from the album ''Cantiecontrocantincantina'' by the Italian folk band I Ratti Della Sabina. Duration of the sample is 29.6 s, equal to 10% of the whole song (4 min 56 s). Encoded at nominal 64 kbps Variable Bitrate)
- 20:26, 20 October 2006 Army1987 talk contribs uploaded File:Il sogno del menestrello.ogg (Excerpt from "Il sogno del menestrello", from the album ''Acqua e terra'' by the Italian folk band I ratti della Sabina. The full song in MP3 at 128 kbps on the site of the band, at http://www.rattidellasabina.it/audio/il_sogno_del_menestrello.mp3)
- 12:40, 23 September 2006 Army1987 talk contribs uploaded File:Srgbspectrum.png (Spectrum of visible light, rendered in sRGB, so that the relative luminances are respected. The CIE 2° color matching functions were taken from http://cvrl.ioo.ucl.ac.uk/, and the conversion from XYZ to sRGB from http://www.srgb.com/basicsofsrgb.htm. I n)
- 13:41, 25 April 2006 Army1987 talk contribs uploaded File:Poincarejokeconvergentseries.png (Graph of the convergents of the series ∑(40<sup>''n''/''n''!) and ∑(''n''!/40<sup>''n''). Poincaré joked that a mathematician call the former convergent and the latter divergent, but an astronomer would label them the other way round. ~~~~)
- 10:49, 13 April 2006 Army1987 talk contribs uploaded File:Beat.png
- 19:21, 23 October 2005 Army1987 talk contribs uploaded File:Rieti.jpg (Taken from [http://www.ngw.nl/int/ita/r/images/rieti.jpg] (found in [http://www.ngw.nl/int/ita/r/rieti.htm]).)
- 14:23, 21 October 2005 Army1987 talk contribs uploaded File:Rieti Italy.PNG (I took the file Italy_Regions_Latium_220px.png by Ahoerstemeier and Sascha Noyes, and added the green spot. ~~~~)
- 17:52, 29 September 2005 Army1987 talk contribs uploaded File:Logistic pdf.png (Plot of the probability distribution function for the logistic distribution with ''m''=0 and ''s''=1 (i.e. σ=''π''/&radq;3). It was created with Microsoft Excel and converted to PNG with Jasc Paint Shop Pro.)
- 10:42, 10 September 2005 Army1987 talk contribs uploaded File:Siae.png (The SIAE (''Società Italiana degli Autori ed Editori'', "Italian society of authors and editors") stamp, to be sticked on any medium containing copyrighted software, sounds, or motion pictures sold in Italy. I scanned this stamp from a music)
- 17:14, 7 September 2005 Army1987 talk contribs uploaded File:Binbeat sample.ogg (30 seconds of steady 10 Hz binaural beats with background pink noise.)
- 10:06, 31 August 2005 Army1987 talk contribs uploaded File:Binbeats2.ogg (Binaural beats. Frequency starts at 20 Hz, slows down to 7.83 Hz in 10 minutes, stays there for 15 minutes, then rises back to 16 Hz in 5 minutes.)
- 09:34, 31 August 2005 Army1987 talk contribs uploaded File:Beat.ogg (Left channel: A3 220 Hz Right channel: G#3 207.65 Hz They beat (acoustics) at 12.35 Hz.)
- 09:50, 30 August 2005 Army1987 talk contribs uploaded File:Criticalline.png (Graph of real (red) and imaginary (blue) parts of the critical line Re(''z'')=1/2 of the Riemann zeta function.)
- 11:32, 26 August 2005 Army1987 talk contribs uploaded File:Criticalline.png (Graph of real (red) and imaginary (blue) parts of the critical line Re(z)=1/2 of the Riemann zeta function. {{PD-user|Army1987}})
- 09:33, 28 July 2005 Army1987 talk contribs uploaded File:Tetration large.png (Graph plotting ''x''^^2, ''x''^^3, ''x''^^4, ''x''^^5, ''x''^^6 and ''x''^^7 for positive values of ''x''.)
- 15:30, 27 July 2005 Army1987 talk contribs uploaded File:Beat.png (A 110Hz A sine wave (magenta) and a 104Hz G# one (cyan). Their sum (blue) and the corresponding envelope (red).)