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No-spam.svg This user is a member of WikiProject Spam.
nl Deze gebruiker heeft het Nederlands als moedertaal.
en-4 This user can contribute with a near-native level of English.
sv-3 Denna användare behärskar svenska flytande.
fr-2 Cet utilisateur peut contribuer avec un niveau intermédiaire en français.
de-1 Dieser Benutzer hat grundlegende Deutschkenntnisse.
da-1 Denne bruger har et grundlæggende kendskab til dansk.
no-1 Denne brukeren/brukaren kan litt norsk.


PhD This user has a Doctor of Philosophy degree
Litecones.png This user is a physicist.
Perl-3 This user is an advanced Perl programmer.
C-4 This user is an expert C programmer.
c++-3 This user is an advanced C++ programmer.
LaTeX logo.svg-3 This user is an advanced LaTeX user.
HTML-4 This user is an expert HTML user.
Flag of the Netherlands.svg This user is of Dutch ancestry.

In real life, my name is Han-Kwang Nienhuys. I have a background in physics and chemical physics, more specifically time-resolved spectroscopy and lasers.

I know a few things about Netherlands and Sweden. Since 2009, I can add photolithography for the semiconductor industry to that, or at least a tiny bit of a particular aspect of it. Although I do not have a formal medical background, I think I'm fairly skilled in spotting pseudoscientific nonsense that is touted by commercial websites and subsequently finds its way into health-related Wikipedia articles.


This section is horribly incomplete and out-of-date.

Pet articles:

Furthermore, I try to keep an eye on linkspam and evident (scientific) nonsense.

Older contributions[edit]

For historical reasons some of the articles I contributed to in a time (2004) when it was very easy to add relevant new content to stubs and missing articles:


Just a selection. Full image gallery: User:Hankwang/Images.

My links & tools[edit]

monobook.js - sandbox