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Michael’s Blog

This is a collection of musings over the last decade. Currently being revised, because I just ported from my Google+ blog, thus unfortunately all comments and replies are lost. And a number of posts have not been cleaned up yet. As you may know, Google+ has been shuttered as of 2019-04-01.



  2019-10-13   Compensating my flights’ CO₂


  2019-10-12   Grüne – Homöopathiekosten von den Kassen nicht ersetzen


  2019-09-10   Friday for future in Freiburg


  2019-08-01   Updating my site, Jekyll


  2019-05-13   John Oliver on the Green New Deal – brilliant


2019-04-18   HTML 5 – summary / details


  2019-03-20   Problems registering Oyster cards for foreigners


2019-03-19   MacOS hidden tricks – .nosync, .noindex, (.nobackup)


  2019-01-01   Migrating my entire site to the static CMS “Jekyll”


  2018-06-03   HTTP → HTTPS


  2018-03-28   Loss of contour in equiluminance


  2018-02-04   Pattern-ERG: P50 & N95 differ in LOCAL origin…


2017-09-21   I couldn’t agree more!


2017-09-05   Public water supply may contain dangerously tiny levels of homeopathic medicine, say experts


  2017-08-09   NO variant of the Café Wall Illusion – Skye’s oblique grating


2017-05-19   On our way to being an outcast when not facebooking


  2017-03-05   Red Strawberrries


  2017-02-28   Life with USB-C is good


  2017-02-14   Opposite Rotation in Kitaoka’s “Rotating Snakes Illusion”


2017-01-17   President Trump: The Inauguration (new Twilight episode)


  2016-12-21   Seasonal Illusion – “White Xmas”


  2016-12-11   Ferien in Lanzarote


  2016-11-24   Open Access for viewing – excellent!


2016-11-21   »Quit social media« – should be ‘asocial’, I couldn’t agree more…


  2016-10-22   Wakeboarding – possibly for the last time this year


2016-09-26   Bodo Wartke – Nicht in meinem Namen


  2016-09-13   Vanishing Dots or Twelve black dots illusion


2016-09-04   Epic fails of mine on the #wakeboard


2016-08-03   Open Access – more than you ever wanted to know about it


  2016-07-18   These three low res icons below refer to new additions to my “illusions & visual phenomena” site.


  2016-06-28   Mein Elektromobil “Twizy” hat 10.000 km erreicht


  2016-06-23   Under water


2016-06-21   Typography & SciFI


  2016-06-12   Repaired my Guitar Amplifier


2016-06-12   ‘Chemophobia’ is irrational, harmful …


  2016-05-21   Brick Wall Illusion


  2016-05-19   ARVO in Seattle – sleepless


2016-05-18   Proud father! Maren singing


2016-05-10   John Oliver on science (mis-) communication


2016-05-09   Two guitarists I venerate, doing their thing together


2016-05-07   Lovely music: Antiquariat


  2016-04-02   CappCon 2016


  2016-03-08   American Statistical Association: p-values considered harmful


2016-03-07   Contrast Rebellion – to hell with unreadable, low-contrast texts!


2016-03-02   Deutsche Bahn: Schlafwagen beibehalten!


2016-02-16   I’ve always preserved Quicktime Player 7 on my machines…


  2016-02-12   Ah…  #snowboarding , and a restorative break


2016-02-06   “GuitarNick” really has a knack for fluid fingerpicking arrangements


  2016-01-29   Visual Acuity: Feedback keeps your participants happy w/o affecting result


  2016-01-11   ggplot2 2.0.0 – Very nice, some plots will look different


  2015-12-31   Review Deadlines


  2015-12-10   An R question


2015-11-29   Idiotisch: EU will Atomkraft subventionieren


2015-11-20   On-line censorship growing


2015-11-14   Wakeboarding at the end of the season …


  2015-11-14   Under the surface of my natural swimming pond


  2015-11-06   Auftragsmalerei in Leipzig


  2015-10-26   AOO – Arbeitskreis Ophthalmische Optik


  2015-10-20   Another Predatory Journal …


  2015-10-18   Handbraking OS X El Capitan


  2015-10-11   Interview “SWR1 Leute”


  2015-08-28   Stop TTIP


  2015-08-26   Tresorit replacing Wuala


2015-08-17   As Alex so aptly states “…copyright is complicated…”


2015-08-16   TeamViewer – Access your computer remotely and share your desktop with friends – it’s free!


  2015-07-25   Pulfrich Effect


2015-07-01   If this campaign reaches its goal, it will only delay… But at least that.


  2015-07-01   Lake Bohinj – Bohinjska Jezero


  2015-07-01   A great ISCEV Symposium in Lubljana, Slovenia


  2015-06-17   What a tangled web we weave – display resolutions


2015-06-08   STOP TTIP


2015-05-26   TTIP already lowering health standards in EU!


  2015-05-25   50 Years of the McCollough Colour Aftereffect


  2015-05-23   Pixel artifact – Be gone


  2015-05-01   Apple MacOS Photos: How to edit or change location metadata (EXIF data)


  2015-04-25   Colour Sampling of “The Dress” – with full #R code


2015-04-24   One way to make your voice against TTIP heard (a little)


  2015-02-28   Colored-Dress Enigma


2015-02-22   Oliver Sacks


2015-02-17   R examples (not just) for users of Excel (or any spreadsheet)


2014-12-31   More good news for our world (from Hans Rosling)


2014-12-31   An amazing and balanced statement on dealing with protesters from the Nashville Chief of Police


  2014-12-28   Last new on-line vision experiment this year


  2014-12-23   “Woodpacking” for the winter


2014-12-22   Australian court to penalize homeopaths for claiming vaccine alternative


2014-11-30   NHMRC¹ concludes that the assessment of the evidence from research in humans does not show that homeopathy is…


  2014-11-23   Andy Weir’s “The Martin” – wonderful!


  2014-11-16   Watercolor Illusion


2014-11-11   Biermann im Bundestag, allein schon das Gitarrenspiel…


  2014-10-17   Wuala ok with Yosemite / Java, how-to


2014-10-10   Nachtzüge erhalten!


2014-09-14   Bachblüten – für sowas möchte ich meinen Namen nicht hergeben ;)


2014-09-06   Abnehmen…


2014-09-06   Homöopathen pfuschen mit bei Ebola – als wenn es nicht schon schlimm genug wäre!


  2014-08-27   Enigma · https://michaelbach.de/ot/mot-enigma/


  2014-08-02   Easter Island Mystery Moais … finally solved.


  2014-07-30   We don’t want no fracking impact factor


2014-07-19   Critical parsing of corporate BS speak reveals industrial inhumanity – A surprise?


2014-07-15   TTIP – Ein Freihandelsabkommen, das uns unfreier macht


  2014-07-06   Wakeboarding in my backyard…


2014-07-06   Frankfurt Airport traffic enhancements


2014-06-29   Colour Matching Game


2014-06-13   Feedly attacked by criminals


2014-05-25   Dynamic Ebbinghaus


2014-05-17   Bike Helmets – No really a Boon


2014-05-13   All I wanted to know about “wall wart” chargers


2014-05-11   Triangle Puzzle


2014-05-08   When you pit two laws of life against each other…


2014-04-26   Context affects colour


2014-04-21   Selten klare Worte: Angst vor “do no evil”-Google


2014-04-16   Freiburg Acuity (and more) Test (FrACT) at version 3.8.2


2014-04-06   All along the watchtower


2014-04-04   How many balls


2014-04-04   MacFixit → MacIssues


2014-03-30   Tips for #Scientific #Citation Management with Zotero


2014-03-26   Strolling in La Gomera


2014-03-01   Anamorphosis in Art


2014-02-23   Great article on Carl Sagan here!


2014-02-05   Benham’s Top unrolled


2014-01-20   Rosetta: Arival of Signal


2014-01-15   Four homespun remedies that work


2014-01-14   Joys of Snowboarding


2014-01-04   Motion-induced blindness


2014-01-04   Snow-diving foxes


2014-01-01   New version of “Flash Lag” in Visual Phenomena


2013-12-23   Now 107 Visual Phenomena: “Ebbinghaus Illusion”


2013-11-29   I couldn’t agree more!


2013-11-28   Radio Controlled Paper Plane


2013-11-24   Snowboarding begins


2013-11-20   Der Arbeitskreis Ophthalmische Optik …


2013-11-17   Our Swimming Pond in mid-November…


2013-11-14   Apple Mavericks missing the ball completely…


2013-11-04   RStudio now plays nicely with Mac OS 10.9 “Mavericks”


2013-11-02   My Motion Adaptation Demo updated to no longer need Flash.


2013-10-18   Just back from China…


2013-10-05   Richard Feynman…


2013-10-04   Harvesting in Leipzig


2013-09-29   How hot will it get in your lifetime?


2013-09-22   A  #twizy  – want to come along? (Yes, there is a passenger seat at the back)


2013-09-17   106 Visual Phenomena & Optical Illusions – Tusi Motion


2013-09-15   Gravity Challenge


2013-09-08   Sometimes iPhoto…


2013-09-01   Elektro-Maxiroller VX1


2013-08-30   Tom Troscianko Prize for “the most outrageous presentation”


2013-08-15   “MacPro” – Apple, what are you thinking?


2013-08-01   R + ggplot + smoothers


2013-07-12   R, question on  massaging data


2013-07-12   105 Visual Phenomena & Optical Illusions – Colour Fan


2013-06-10   Using Metadata to Find Paul Revere


2013-06-04   Paragliding


2013-05-30   British Research Assessment Framework (REF): simple analysis reveals it can’t work, is driven by interests of…


2013-05-27   About time we got serious about misuse of the impact factor


2013-05-26   Teaching in Venice


2013-05-26   FrACT – Freiburg Vision Test


2013-05-20   Wow, Dennet!


2013-05-18   Auftragsmalerei in Leipzig


2013-05-13   Dieses Experiment von Peter Brugger generiert bestimmt interessante Ergebnisse!


2013-05-01   Differentially clenching fists for learning & recall?


2013-05-01   Hah, Wakeboarding…


2013-04-26   Großartiger Vortrag von Manfred Spitzer


2013-04-23   104 Visual Phenomena & Optical Illusions – Blind Spot Demo


2013-04-20   Contrasts in Leipzig


2013-04-13   Great article on #homeopathy   in #arstechnica : “Not because we think there’s a value in talking about…


2013-04-11   At the end of January I had called out my excellent experience with an external Thunderbolt disk http://goo.gl/S9j52…


2013-04-09   Theatermacher Gundelfingen


2013-04-09   Academic Spam


2013-04-04   Cut by the bleeding edge of technology – twice


2013-04-01   No April Fool’s Joke – Wakeboarding opened today


2013-03-31   Easter in Leipzig


2013-03-16   This is an amazing (if only beginning) piece: the boundary conditions for research ideas in real life.


2013-03-15   Winter on the Vectrix Maxi-Scooter


2013-03-13   R, indirection?  (solved)


2013-03-09   Landolt – der mit dem Ring (für mich täglich Brot, z.B. hier http://michaelbach.de/fract/). Danke, Martin Missfeldt.


2013-03-09   “Snake Illusion” across species


2013-03-07   Hyphenator for our websites


2013-02-24   Snow and snowboarding in my neighbourhood


2013-02-23   Einerseits hinreißende Satire, andererseits schrecklich wahr …


2013-02-20   103 Visual Phenomena – Ames Window


2013-02-19   Apple Fusion Drive – Rolled my own


2013-02-09   102 Visual Phenomena – Moiré Patterns


2013-01-27   Nice external Thunderbolt disk


2013-01-20   100 + 1 Visual Phenomena: Mach Band


2013-01-17   Tips for #Scientific   #Citation Management with Zotero


2013-01-07   Marrying TextWrangler to git


2012-12-29   Music, Yes, Music!


2012-12-27   Round numbers fascinate us


2012-12-20   SSDs = Simple Speed Demons = Solid State Disks


2012-12-19   No correlation between video games and gun-related murders


2012-12-10   #Zotero: Citation management done well, but one problem


2012-12-09   Although the eyes have it, they do not stand alone – The Bayesian interpretation of perception


2012-12-06   OS X Moutain Lion behind a firewall — obnoxious & mysterious dialogs and how to get rid of them.


2012-11-25   On Casino Royale – the first James Bond novel


2012-11-25   Deep Learning explained so I understood a little


2012-11-21   100 Visual Phenomena


2012-11-16   Been there…


2012-11-11   Mind Lab – Graceful demos of perceptual phenomena


2012-11-09   Data peeking is always wrong (except when you do it right)


2012-11-02   Scientific Citation Management


2012-11-01   Some pleasures in #science  in Gothenburg


2012-10-24   R & ggplot2 – “Violin plots” considered beautiful


2012-10-21   Warm days in autumn on the water + AppleSripted webcam dowloader


2012-10-15   Statistics>R:  Re-ordering factor levels


2012-10-06   Bonzo Dog Doo-Dah Band etc.


2012-10-03   Summer is gone…


2012-09-28   Walk-in Eye Model with a twist


2012-09-28   Signing away your rights – or not


2012-09-24   ggplot2 – geom_text vs. annotate(geom=”text”)


2012-09-22   Open Science – Experimenting & Publishing


2012-09-19   A new addition to Visual Phenomena & Optical Illusions


2012-09-18   Where waterlilies go to die


2012-09-16   Some people cannot learn to program?


2012-09-13   An experience with the rapid dynamics of search engines


2012-09-07   *Receiver Operating Characteristis (ROCs) #roc *


2012-09-05   Spicing up your papers


2012-09-03   Google Plus Tricks    I place this ‘cheat sheet’ here, where I need it.


2012-09-02   I was cross …


2012-08-28   Quantity vs Quality in Science


2012-08-26   A flower in our swimming pond


2012-08-25   Higher incentives → less performance…


2012-08-25   Adaptive Optics – Amazing image resolution from live human eyes


2012-08-15   MacOS Mountain Lion: Do this for a functional “New Document Model”


2012-08-14   Getting your priorities right in space: Training on the robot arm vs impressing the gals with yo-yo tricks…


2012-08-14   ”64% of the facts on the Internet are incorrect by 48% according to 52% of commentators”


2012-08-06   Changes and Additions to ggplot2-0.9.0


2012-08-05   Scientific Style Change: Boasting exploded in the last 5 years – with R code to prove it


2012-07-31   Xcode & Mountain Lion Update Woes


2012-07-27   Butler – the Mac utility that I use most of all was just updated for Mac Mountain Lion.


2012-07-25   Inference by Eye – how to read statistical error bars


2012-07-24   Of Macs, sealing wax, etc. Episode 2


2012-07-22   R, ggplot2, and axis limits – unexpected behaviour + solution


2012-07-19   Of Macs, sealing wax, and very old Macs


2012-07-17   Optical Art with R


2012-07-12   Bridget Riley’s Moving SquaRes


2012-07-09   #Guitar playing and Neuroscience


2012-07-08   World’s most accurate pie chart


2012-06-26   Lion Tweaks – Cleaning up that ridiculous “leatherette” appearance of Address Book and iCal in Mac OS Lion


2012-06-26   Lion 10.7.4 update breaks iCould etc. behind a firewall + fix


2012-06-24   Color Choices for Scientific Graphing


2012-06-19   R coding Style Guide


2012-06-19   Musings on programming languages


2012-06-17   Cappuccino?


2012-06-14   R – I like it, but it’s so difficult… same goes for ggplot2!


2012-06-12   A talk on GIT by Linus Torwalds.


2012-06-10   Neutrino faster-than-light issue conclusively put to rest. Ha!


2012-06-10   On our way to this year’s ISCEV Symposium in Valencia we discovered a pearl: “Chez Michelon”…


2012-05-28   Computer Vision – a topic that interested me highly 2 decades ago…


2012-05-25   The R Project for Statistical Computing is gaining ground world wide after I adopted it for all my analyses &…


2012-05-20   As some of my friends & colleagues know, I’ve moved nearly all of my experimental analysis and graphing to “R”…


2012-05-19   TED talks are usually brilliant anyway – this one excels by sheer brief- and wittiness.


2012-05-18   Yesterday I installed the Safari extension “Glims” mainly as an easy means to set up DuckDuckGo as my main search…


2012-04-27   my favourite #wakeboard cable park now features a webcam! Very useful to decide if it’s over- or undercrowded.


2012-04-27   Not really new, but uplifting ;-)