## Archive for the 'perception' Category

### ShutterSploshShredderPlots

Sunday, October 7th, 2018

Remark: The code as posted at the randform post ShutterSploshScatterPlots needs to include the new Content Security Policy.
That is you have to embed the following lines (at least thats how it worked here for the moment) into your html head:

<meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
<meta http-equiv="X-Content-Security-Policy" content="default-src 'self'; script-src 'self'">
<meta http-equiv="X-WebKit-CSP" content="default-src 'self'; script-src 'self'">


Moreover the javascript has to be pasted into a separate file and referenced accordingly within your html body, like for example as:

 <script src="shutter.js" type="text/javascript"></script>


In case you feel a bit overcharged by all that – as a courtesy for you I quickly filmed the program output with my mobile and turned it into a gifanimation, which you can watch after the ” Read the rest of this entry”.

### august note

Friday, August 31st, 2018

This month no new randform post.
The previous post is hard enough to digest.

On a personal note:
The previous post is actually a main result of a phase between mid/end 2012 – spring 2015. In this phase I was investigating in which way I could apply my math/physics and visualization skills to climate science. In 2015 I more or less ended the investigation, since I found that -amongst others- my programming skills were not good enough for a continuation on a more professional level and started to work in a company in which I have been working since then.

### Work-to-rule?

Saturday, June 30th, 2018

Last year (Jan 2017) there was a long essay in the german newspaper “Die Zeit” (“The time”) about how important a natural scientific evaluation could be for historical research. The essay: “Darum hatte Hitler keine Atombombe” (“That’s why Hitler had no nuclear bomb”) was written by physicist Manfred Popp. A very brief summary of his argumentation is that a lot of historical research about german nuclear research during Nazi times was more or less flawed due to missing knowledge or misinterpretations of physical facts.

### Blickverschiebung

Sunday, January 28th, 2018

You might remember the post “Before and After” which was part of a series of posts, which were documenting the demolishment of a pub/restaurant/dancehall in the Berlin neighbourhood of Biesdorf, which belongs to the Berlin district of Marzahn-Hellersdorf.

The above image shows the train station S-Biesdorf. The former restaurant was located right behind the back of the fotographer. If you look at the post you should be able to assemble the space situation.

### galaxy flush reloaded

Wednesday, November 29th, 2017

pan and zoom as usual

In 2006 Tim played around with swarm simulations in processing and ended up with funny flush like settings. We tweaked the parameters in such a way that it ended up looking like and sounding like a galaxy being flushed down the drain and made it into the art work “dipper galaxy flush” where dipper refers to the wellknown patterns in the constellation Ursa Major. Our comment wasn’t though referring to a particular galaxy there but to galaxies in general – which could include our own.

If you look at the processing code you see that Tim’s simulation doesn’t use e.g. Newtonian gravity, although Tim used a force which is similarily “centralizing” as dark matter.

Inspired by discussions about dark matter and dark energy and general relativity at John Baez’ social media I wanted to get a feeling of how important the feature of dark matter is in order to allow for galaxy formation.
The above is a realtime javascript simulation using purely newtonian gravity with no dark matter but two giant masses (indicated by blue circles, which size is not proportional to the smaller circles) and something that could be called an “inelastic binding”. That is if the distance between masses is smaller than some number then those “close-by” masses behave as if they stuck together as in an inelastic collision, or in other words: the velocity of a mass is set to be the weighted average velocity of the close-by masses (details in the code, how much inelastic collision you want is set by the parameter “mix”).

It was acutally not so easy to find a configuration which somewhat mimicks galaxies, but the above looks a bit as if, I find. If I find the time I may add a 3D viewer. Try yourself – the source code is open.
Here how a scientifically advanced galaxy simulation, which includes dark matter looks on a super computer: World’s first realistic simulation of the formation of the Milky Way and here an interview with the author Lucio Mayer. Just like us many other users think it looks like a filmed flush – if you read the comments.
Here another simulation by Fabio Governato on his youtube channel: The Formation of a Milky Way like Galaxy. He has a whole variety of galaxy formation videos.

remark: the simulation is a modification of Mike Bostocks canvas swarm simulation at https://bl.ocks.org/mbostock/2647922

update 1.12.2017: There was a mistake in the addition of the z-speed, which is now corrected in the above version. Luckily the correction did affect the overall appearance only slightly.

### What’s going on at the Ural?

Saturday, October 28th, 2017

Image from NOAA.

In an earlier randform post I mentioned the connection of methane emissions and geological features. In particular in an area called Vestnesa which is about northwest of Svalbard (look at image 3) high methane emissions were due to plate tectonics. In that post I asked wether this fault couldn’t be eventually part of a plate which arises from a break of the Eurasian plate, i.e. in particular whether there are similar plate tectonical ongoings along the (northern part of) Ural. I was in part drawn to that question because of the above image. In the above image you see a plume (CH4 air masses) starting at the Kara sea and then going down south in the west of a line, which seems to indicate the Ob river. I.e. this plume seems to be going down at least along the northern part of the Ural mountains. The image is on a world scale so this is a bit speculative, but still, it looks as if. But since the resolution is so crude it should also be mentioned that east of the Ob there are major gas fields, like at Novy Urengoy.

(more…)

### ShutterSploshScatterPlots

Friday, September 29th, 2017

Mohammad Ali (mohdali) had made a nice illustration of the socalled rolling shutter effect. He wrote a programm in javascript which uses the library d3 called Rolling shutter.

This program was used by artist Scriptique to program a kind of “paint-by-number recreational occupation for your browser” (as the artist called it). It should display something like “a paint drop dropping”.

The program has a MIT licence and you can see how well your browser paints by numbers by pasting the program into a file and then opening the file in your browser (tested with firefox).

Saturday, May 27th, 2017

After a brief history of the radio technology museum Königs-Wusterhausen on the “Funkerberg” (“broadcast hill”) and an overview on the impressive Dieselgenerator here now part 3 of the series. Part 3 deals a bit with the radio broadcasting itself and in particular with the role it played within my family.
(more…)

### Some Opiods and ATS stats

Thursday, March 30th, 2017

“End-Hauptbereichsverspannungsmedikamente für Nacknmuskuleere Speerre” collaborative artwork by artists group “Entente Sublimale”

More or less recently I had seen a video in which a famous politician was talking in a way which gave me the impression that this person was on drugs. I may have been wrong, but still. It should be said that in the video the person had to comment on a very tragic event and that was sofar the only time where I saw this politician in this state.
Then there was also Jeroen Dijsselbloems recent controversial remarks about economic failures due to alcohol and women and the following discussions, where it was e.g. remarked that after taking interest payments away, the economics of the Netherlands seems to look actually worse than that of Southern Europe. All this made me look a bit at examples of drugs and in particular opiods in connection with economics and politics.
(more…)

### What’s going on in Fukushima?

Friday, February 3rd, 2017

Some remarks on the recent observations regarding plant 2.
(more…)