Dean W. Armstrong

Scientific and other projects in astronomy, geoscience, physics, and electronics.

Thursday, February 11, 2016

long term survelliance flights over Chicago

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Perhaps you've heard of constantly circling Cessna planes, spending hours circling high above US cities. http://www.washingtontimes.com...
1 comment:
Wednesday, June 24, 2015

Morse code over laser light with an Arduino

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19. After another of my famously lavish parties, I sometimes walk alone out to Promontory Point at exactly 10:00 p.m. Thursday and glance l...
1 comment:
Friday, June 20, 2014

insect on clematis

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A cute colorful insect hanging on out a clematis vine. Graphocephala coccinea, red-and-blue leafhopper.
Monday, March 17, 2014

Hyde Park Hum

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Background: Hyde Park Residents Puzzled by Mysterious Noises, Vibrations , Loud Hum at Night . Some random thoughts: I hear a vague dista...
3 comments:
Wednesday, September 18, 2013

random recent interesting titles

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Oversharing: Yesterday's catalog search items that caught my eye. (My search was all T acquired in the past six months published in the ...
Thursday, June 27, 2013

lemon juice and fine steel wool works on rust on a stainless steel dishwasher

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I had a rust stain on the interior of a stainless steel dishwasher from contact with a rusting pan, and after having no success with CLR and...
1 comment:
Wednesday, February 13, 2013

Why toolboxes and tool handles stink.

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For years I've encountered this issue, and it always perplexed me: why do a lot of toolboxes stink? I had always assumed it was rela...
37 comments:
Monday, January 21, 2013

CFL lifetime report #2

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A third CFL failed in my torchiere conversion I did back in the winter of 2008. I used this light about 7 hours a day consistently until m...
Thursday, April 26, 2012

Improvements on my first cigar box guitar build.

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To improve my first cigar box guitar build, I added a piece of 2" x 1/4" mahogany mull casing (ripped to 1.5") to the neck. I...
1 comment:
Wednesday, February 08, 2012

First Cigar Box Guitar build

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A few photos of my first cigar box guitar. For cigar boxes both Hyde Park Cigars (the place on 53rd and Harper) and Binny's have them,...
2 comments:
Monday, February 06, 2012

Audio Acoustic Amplifiers with no electronics

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Amplifying audio without the use of any electronics: Audio Acoustic Amplifiers from Experimental Musical Instruments.
Friday, December 02, 2011

"Wrong Emphasis on the Wrong Syllable"

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I'm just putting this here because I would doubt Facebook or Twitter would archive very well. Mike Myers, in the movie "View from t...
Monday, August 22, 2011

Refrigerator payback

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My current fridge (a Hotpoint Foodcenter 24) is older than I am. It was originally the avocado color shown in the ad; at some point someone...
3 comments:
Sunday, August 14, 2011

7.72 microRads/hr

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A 39 day long sampling of every minute leads the geiger counter to a long term average of 7.72 uR/hr. That's 56658 sampling points. T...
Wednesday, July 20, 2011

New Moon of Pluto

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http://www.cbat.eps.harvard.edu/cbet/cbet002769.txt
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Dean W. Armstrong
Dean W. Armstrong has a B.A. from the University of Chicago in the geophysical sciences. My opinions are my own and do not reflect anyone or anything else's, unless they just happen to.
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