User:CheChe



"The very existence of Wikipedia is proof that there are more people in the world wanting to build than to tear down. Were that not true, vandals would have overwhelmed and destroyed us years ago."

- Antandrus

I believe knowledge should be beautiful! If you need any help with diagrams just let me know and I'll see what I can do.

My main focus of work lately has been the Group Testing article, which recently passed its GA review. Next I'm hoping to take this article to featured, so any suggestions or feedback is welcome.

I am also currently recording a spoken version of the Earth article. You can find my script here.

General notes
Propose merge of Wythoff symbol and Wythoff construction

Links I find useful

 * Diagrams: Graphics Lab • Requested diagrams • Top 200 maths vectorisation requests • Images for conversion • Available fonts • SVG check


 * Deletion: Deletion policy • WP:AFD • AfD Common outcomes


 * Governance: Democracy portal • Administration of Wikipedia


 * Community: The Five Pillars • Community portal • RfC portal • Teahouse • All policies and guidelines • The Signpost


 * Copyediting: Guide • Tagged articles


 * Other: GA nominations • Page view statistics • Special:PendingChanges • Template_messages/User_talk_namespace • GALMorous

Krinkle: Special:BlankPage/RTRC

Goals: User:Kelvin13

Planned vectorisations

 * File:Spread of avalanches in G-M tube.jpg
 * File:Sphere symmetry group d3h.png
 * File:Catena of soils.jpg
 * File:Gametic meiosis.png
 * File:Molly Sheehan Wikipedia 1.jpg
 * Any Brews Project file preceded by "@"
 * Coxeter-Dynkin diagrams

Upload checklist

 * Upload image
 * (Remove SVG request / link to new version)
 * Link back to source / credit on new version
 * Update Wikipedia pages
 * Update user page

Gallery
Here you can see most of the graphical work that I've uploaded to date (almost entirely SVGs) in reverse chronological order. Note that many of these are vectorisations of previous works. In these cases, click on the image to find a link to the original author. I do all my vectorisations by hand to ensure the best quality (compare this and that to see what I mean: one tenth the file size, incalculably better quality). For a full list of uploads see my upload list.

Total: 70

The Brews project
The Brews Project is a personal project of mine to vectorise many of the great diagrammatical contributions of Brews ohare.

--Progress--

SVG requests made: 99

Conversions made (✓): 26

Conversions already done (✗): 1

Currently planned (@): 0

Below is a sort of todo list I'm working my way through.

From user page

File:Step response for two-pole feedback amplifier.PNG

✓ File:Conjugate poles in s-plane.PNG

File:Feedback amplifier input resistance.PNG

File:Small-signal current amplifier with feedback.PNG

File:Barrier lowering.PNG

File:MOSFET junction structure.png

File:Pole Splitting Example.png

File:Pole Splitting Example with Miller Transform.png

✓ File:Vector field on a surface.PNG

File:Faraday's disc.PNG

File:Disc-to-strip mapping.PNG

✓ File:Earth coordinates.PNG

File:Widlar small-signal.PNG

✓ File:Integration Order.PNG

File:Moving coordinate system.PNG

✓ File:Anomalies.PNG

✓ File:ForceDiagram.PNG

File:Accelerating car.PNG

File:Silicon conduction band ellipsoids.JPG

File:Points of view.PNG

File:Neutron star cross-section.JPG

File:Current continuity in capacitor.JPG

File:Velocity-redshift.JPG

File:Phase diagram for pure substance.JPG

File:Phases of Nuclear Matter.JPG

File:Matter Distribution.JPG

File:Wavelength & refractive index.JPG

File:Wavelength indeterminacy.JPG

File:Local wavelength.JPG

File:Interferometer path differences.JPG

File:Nonsinusoidal wavelength.JPG

File:Reaction path.JPG

File:Stellar aberration.JPG

File:Wedge product.JPG

File:Flank & hinge.PNG

File:Cylindrical fold.PNG

File:Advancing ramp in incompetent layers.PNG

File:Ramsay Classification.PNG

File:SubductionDelamination.JPG

File:Volcanoes at subduction.JPG

File:Fault block mountain.JPG

File:StrikeLine&Dip.JPG

File:Earth temperature.PNG

File:Speeds of seismic waves.PNG

File:S-wave velocity.PNG

✓ File:Pythagoras for scalene triangle.PNG

✓ File:Parallelpiped volume.PNG

✓ File:Pythagoras 3D.PNG

✓ File:Line elements.PNG

✓ File:Eccentric and true anomaly.PNG

✓ File:Tâbit ibn Qorra.PNG

✓ File:Law of cosines.PNG

✓ File:Pytthagoras construction.PNG

✓ File:Parallelogram equality.PNG

File:Inertial frames.PNG

✓ File:Unbalanced rotating shaft.PNG

File:Michelson interferometer with corner cubes.png

File:Reactive centrifugal force in uniform circular motion.PNG

File:Black-body realization.png

File:Idealized photosphere.png

File:MOSFET Structure.png

File:Semiconductor band-bending.png

File:Inversion with source-body bias.png

File:Two diode structures.png

File:Pn-junction zero bias.png

File:Pn-junction forward bias.png

✗ File:Diode quasi-fermi levels.png

File:Pn-junction reverse bias.png

File:Quasi-Fermi levels.png

File:PN-diode small-signal circuit2.png

File:FINFET MOSFET.png

File:Modulated wave.png

File:Signal envelopes.png

File:Double-slit diffraction pattern.png

File:Phonon dispersion relations in GaAs.png

File:Electron probabilities in GaAs quantum well.png

File:Diatomic phonons.png

File:Optical & acoustic vibrations.png

File:Ontological commitments.png

File:Resource allocation.png

File:Set-point control.png

File:Regulator with feedback.png

File:Feedback op-amp voltage amplifier.png

File:Negative feedback amplifier with disturbance.png

File:Feedback topologies.png

File:Signal flow graph for feedback amplifier.png

File:Signal flow graph example.png

File:Flow graph for three linear equations.png

From elsewhere

✓ File:Illustration to Euclid's proof of the Pythagorean theorem3.PNG

✓ File:Euclid Corollary 5.PNG

✓ File:Trig Functions.PNG

✓ File:Trig Functions 2.PNG

✓ File:Pythagoras applied to similar triangles.PNG

✓ File:Pythagoras by similar triangles.PNG

✓ File:Components of proper motion.JPG

File:Widlar Current Source.PNG

✓ File:Parallelogram law.PNG

✓ File:Rotating spheres.PNG

✓ File:Rotating-sphere forces.PNG

Good Article reviews
A good article is an article that has passed an independent review ensuring that it is well written, verifiable, broad, neutral and if possible, illustrated. You can identify good articles by this icon:, which appears in their top right corner. Below you can find a list of the good-article reviews that I've conducted, as well as the template that I use to do them.

Total: 5 (P/F : 4/1)

Writing and compliance with Manual of Style
 Prose is clear and concise. Lead section. Layout. Words to watch. Fiction. List incorporation. 

Verifiability & original Research
 All references presented in appropriate layout.</li> <li>Sources are reliable.</li> <li>Sources support the content.</li> <li>Likely-to-be-challenged information is cited.</li> <li>Statistics cited.</li> <li>No original research.</li> <li>No copyright violations / plagiarism.</li> </ol>

Topic coverage
<ol> <li>Addresses main aspects of topic.</li> <li>Stays focused.</li> </ol>

Illustrations
<ol> <li>Images present if possible.</li> <li>Correct copyright tags.</li> <li>Images relevant.</li> <li>Captions appropriate.</li> </ol>

Other

 * Neutral point of view.
 * Stable.
 * Previous review issues adequately addressed (if applicable).
 * No technical issues.

Vector bloom


Vector Bloom is an ongoing initiative of mine hosted once a month. The idea is to draw 10 or more diagrams (vectorisations are permitted) on a single day. Then I'll add comments on how 'the bloom' went.

Update: This initiative has been canceled. Contrary to it's original aims, Vector Bloom ended up decreasing productivity. This is because it incentivised 'saving' vectorisations for later (so I could tackle them all at once). This then created a barrier: if I wanted to do a vectorisation, I would be committing myself to doing 10, or I'd be wasting the ones I did. Anyway, I'd like to find some other way to increase my productivity in this area, but until then, I'll just be working sporadically as usual.

This bloom was dominated by 'arrow style' diagrams, and I feel like I learnt a lot about easily placing text. I finally started using one of Wikipedia's available fonts for the first time (letter placement issues be gone!). I also drew some icons that we're hoping will make it into a new Wikiproject banner template. All in all it was a pretty successful bloom, though the uploading process to a lot longer than I had anticipated.

Historical records
Links to information on the internal history and evolution of Wikipedia. My current task is to hoover up the primary sources in meta:Category:Wikimedia history. There are also some interesting pages in Category:Wikimedia hardware.

Timelines
Timelines are chronologically ordered lists of events with minimal commentary.
 * (1989–2007) Wikipedia timeline, The Wikipedia Hole.
 * (1993–2011) Timetoast Wikipedia timeline
 * (2000–2012) Wikipedia timeline
 * (2000–2012) Overall timeline
 * (2001–2003) Histoire de Wikipédia – relates to the history of French Wikipedia.
 * (2001–2008) Wikipedians timeline
 * (2001–2008) Timeline of public perception of Wikipedia
 * (2001–2009) MediaWiki timeline
 * (2001–2015) Africa Portal/Timeline – projects, initiatives, and events related to Africa and Wikimedia.
 * (2001–present) Logo history
 * (2001–present) Wikipedia milestones
 * (2002–2013) Sister projects timeline
 * (2002–2013) Site operations timeline
 * (2002–present) Meta Milestones
 * (2003–2007) Site operations timeline
 * (2012–2016) Press clippings
 * (2013) MediaWiki timeline/2013 – a continuation of the (2001–2009) MediaWiki timeline.


 * 2001
 * 2002
 * 2003
 * 2004
 * 2005
 * 2006
 * 2007
 * 2008
 * 2009
 * 2010
 * 2011
 * 2012
 * 2013
 * 2014
 * 2015
 * 2016
 * 2017
 * 2018


 * Press coverage 2001
 * Press coverage 2002
 * Press coverage 2003
 * Press coverage 2004
 * Press coverage 2005
 * Press coverage 2006
 * Press coverage 2007
 * Press coverage 2008
 * Press coverage 2009
 * Press coverage 2010
 * Press coverage 2011
 * Press coverage 2012
 * Press coverage 2013
 * Press coverage 2014
 * Press coverage 2015
 * Press coverage 2016
 * Press coverage 2017
 * Press coverage 2018

Indices
Indices are lists of links to primary or secondary sources without commentary (other than possibly dates) attached.
 * Internal news media
 * List of newsletters
 * Historical archive – pages removed from the Wikipedia namespace.
 * meta:Category:Wikipedia history
 * Wikipedia commentary – old list of essays which have since been moved to meta, and has itself been moved to meta.
 * Category:Wikimedia history
 * Category:Wikimedia by year
 * Wikimedia_press_releases
 * (2006–present) Reports – place for groups working with Wikimedia to post reports of their activities.
 * (2000–2010) Meta Archives index – Category:Archives has sub categories and may contain more recent sources.
 * (2001–2006) Events by chronology
 * (2001–2009) Meta Historical archives index
 * (2001–present) Wikipedia in the media
 * (2001–present) Press coverage
 * (2002–2006) Press releases – see also the meta index/timeline for press releases.
 * (2003–2016) Wikimedia press releases
 * (2004–2007) Category:Wikimedia hardware
 * (2006–2018) Resolutions
 * (2003–2016) Wikimedia press releases