Das Stillleben A40 war groß.
Wahlheimat Ruhrgebiet <3.
zebramädchen's tumblr.
for all the things untwittable.
I'm into cyberculture, language, millipedes, design und photography.
I like Pi, coincidence and xkcd.
~ Monday, July 19 ~
~ Wednesday, July 7 ~
Heute habe ich mich nach Holthausen aufgemacht, um dort meine neue Lieblingspflanze, den ebenso hübschen wie menschenunfreundlichen Riesenbärenklau zu fotografieren.
Dazu passend: Genesis - The Return of the Hogweed
~ Monday, June 21 ~
[Flash 9 is required to listen to audio.]
Tags:
fourier
math
nerdiness
A Song about Fourier Transforms, sung by William A. Sethares (who obviously rocks; his website features - among other cool stuff - a klingon song).
Integrate your function times a complex exponential
It’s really not so hard you can do it with your pencil
And when you’re done with this calculation
You’ve got a brand new function – the Fourier Transformation
What a prism does to sunlight, what the ear does to sound
Fourier does to signals, it’s the coolest trick around
Now filtering is easy, you don’t need to convolve
All you do is multiply in order to solve.From time into frequency – from frequency to time
Every operation in the time domain
Has a Fourier analog – that’s what I claim
Think of a delay, a simple shift in time
It becomes a phase rotation – now that’s truly sublime!
And to differentiate, here’s a simple trick
Just multiply by J omega, ain’t that slick?
Integration is the inverse, what you gonna do?
Divide instead of multiply – you can do it too.From time into frequency – from frequency to time
Let’s do some examples… consider a sine
It’s mapped to a delta, in frequency – not time
Now take that same delta as a function of time
Mapped into frequency – of course – it’s a sine!Sine x on x is handy, let’s call it a sinc.
Its Fourier Transform is simpler than you think.
You get a pulse that’s shaped just like a top hat…
Squeeze the pulse thin, and the sinc grows fat.
Or make the pulse wide, and the sinc grows dense,
The uncertainty principle is just common sense.
~ Friday, June 11 ~
Prädikat “fußballfreie Tweets”
Ich glaube, ich werde die WM-Tweets in meiner Timeline tapfer ertragen. Aber ich werde selbst nicht über die WM twittern.
Wer zeigen möchte, dass seine Updates auch WM-frei bleiben werden, kann das mittels @kcu s barcampomat tun. Oder auf twibbon: http://twibbon.com/join/noWM
… oder diese von mir eben mal kurz schlecht zusammengebastelte Grafik benutzen:
(und hier das psd)
1 note
~ Saturday, June 5 ~
~ Tuesday, May 18 ~
~ Wednesday, May 12 ~
Hardware Flohmarkt II.
Wie ihr wisst verkaufe ich mein Hab und Gut um mir ein Macbook zu kaufen.
Also: Wer will ein Lensbaby Muse, plastic, für Sony Alpha/Minolta?
Ende 2008 gekauft, viel herumgetragen, wenig benutzt. Neupreis 70 Euro. - Und sowas kann man damit machen.
Hardware Flohmarkt.
Hardware! Frische, gute Hardware!
Abzuholen in Essen, oder Übergabe in Duisburg oder Dortmund.
Dell Inspiron Mini 1011.
in ungeöffneter OVP, mit Hersteller-Garantie bis Jan. 2012.
neu: 299,- . VHB: 240,- .
Nur in gute Hände: mein mac mini.
1.83GHz Intel Core 2 Duo, 2GB RAM, 80GB HD.
2 Jahre jung, ein paar Kratzer auf der Oberfläche. ansonsten bis heute täglich in Benutzung und er ist treu und verlässlich. Perfekt als Medien- oder Web-Server, oder als Desktop-Rechner für Omma oder Mama.
neu: 444,- . Gebote, bitte!
~ Monday, April 26 ~
~ Friday, April 23 ~
~ Sunday, April 18 ~
~ Thursday, March 25 ~
Social impairments.
Needless to say, this is based on a real story.
P.S.: When I learnt Basic back when I was 13, the first thing I wanted to do was to create a virtual friend. Oh, and I hate it when people talk to me in bad grammar.
reblogged via 
~ Wednesday, March 17 ~
Hackers are Makers rather than Scientists
when I began reading this essay I thought it was just another glorification of programming as art or something. but it actually turned out really nice.
(it’s back from 2003, in other words: ancient, and I’m probably the only one who didn’t know it.)
among all the paragraphs I’d like to quote (which I won’t, just go read it yourself), this one really struck a chord with me:
We need a language that lets us scribble and smudge and smear, not a
language where you have to sit with a teacup of types balanced on your
knee and make polite conversation with a strict old aunt of a
compiler.
~ Friday, February 5 ~
~ Wednesday, February 3 ~
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