Pushing rectangles...
Electical Engineering topics, which I pretend to have a qualified opinion


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Pushing rectangles...
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Permanent link: Thursday, October 17, 2002 Thursday, October 17, 2002
 

What is this "life" you speak of?


 Andy Grove... [e]ncourage the young people at Intel to get out more...[Scripting News]

Get out more? What kind of sissy tech company do you think they're running?


11:38:55 PM  Permanent link  Categories: Pushing rectangles...

Church's Thesis is neat and/or nifty


The almost general purpose computer versus the essence of computability.

Jeremy Bowers is kind enough to answer my question regarding why you can't have an only almost general purpose computer.

As much fun as this explanation, the proof of this is one of the most difficult and twisty proofs in the history of mankind (in my opinion), because of the way the Universal Turing Machine wraps back on itself to run itself. So that's virtually useless in any general description. Moreover, any such demonstration must necessarily get down to the nuts and bolts of what computability is, which means tossing around some very ugly-looking mathematical notation.

[markpasc.blog]

Although there's a higher purpose in all of these computability analogies (see also Freedom To TInker here and here), I'm just in it for the halting problem.


11:15:22 PM  Permanent link  Categories: Pushing rectangles...

DIY Visualization


Wind direction graph.

Shouldn't the wind direction chart (that is, the fourth one, the next to last) look like a spirograph? Draw a dot in the correct direction, but farther away from a center point as time wends on?

Kinda like this, I guess? Maybe I shouldn't've drawn the connecting curves--it'd be much easier to read without them, I think. In a real graph, the brightness of the line could be the windspeed.

[markpasc.blog]

A possibility would be to put the current time in the center, not the starting time. The idea is that the current conditions are of more immediate interest, so they should be accessible faster. The trouble is that at the very center all directions look the same. Perhaps the "center" should not be the center point but the edge of a circle around the center point.


11:07:47 PM  Permanent link  Categories: Pushing rectangles...


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