Odds and ends

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Mark
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re: Odds and ends

Post by Mark » Sat Nov 18, 2006 5:39 pm

Yesterday I was wandering around a large craft store, (Hobby Lobby), looking for metal objects or something curious to toy with out of boredom. I saw these mock clear lightbulbs where the threaded cap unscrews from the glass. They were kind of thick but I thought they might make a cute jam jar with the cap drilled and a bit of methanol. They were only 99 cents. The cap has a very tiny hole in the center so being strange I decided to tighten the cap and suck on the lightbulb to pull a vacuum. It leaks a tiny little bit around the threading, but not much and since the rim of the bulb is flat, a fiber washer would probably be enough to seal it air tight. Then you could drill out the top to the desired hole size.
I wonder if any security cameras caught me sucking on the lightbulb? I can only wonder what they might have thought. ha
Mark
http://www.save-on-crafts.com/medligbulcle.html
http://tinyurl.com/y5tgab
http://www.gneil.com/images/products/1slB0729.jpg
There is also an opaque bulb like these if you wanted.
Make your own? You can backtrack to part one of this next link and there are a lot of better pictures of how the prep and cut of the bulb is done. It shows the ideal place to make the cut.
http://www.chibardun.net/~jfox3/constru ... b%202.html
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Mark
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re: Odds and ends

Post by Mark » Sat Nov 18, 2006 6:02 pm

"The experiments dictated on these pages could cause damage to a person, place, or thing, and should not be attempted except by circus folk and trained chimpanzees."
http://www.fishdot.org/portfolio/lighte ... parks.html
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marksteamnz
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Re: re: Odds and ends

Post by marksteamnz » Sat Nov 18, 2006 7:05 pm

Mark wrote:Strange NASA water and bubble experiments.
Mark
http://youtube.com/watch?v=34b4WFe2t9U
Thanks Mark. Absolutely fantastic! Just sitting here stunned! That is so beautiful.
Cheers
Mark Stacey
www.cncprototyping.co.nz

Mark
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re: Odds and ends

Post by Mark » Sat Nov 18, 2006 8:35 pm

"Why not work?" ha
Just the Mythbuster Boys and a lot of silliness with a Van de Graaph Generator.
Mark
http://tinyurl.com/y42ea9
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Mark
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re: Odds and ends

Post by Mark » Sat Nov 18, 2006 10:51 pm

I don't know what's going on here, but it's some sort of something.
Mark
http://www.skinbag.net/skinbag-gb/code/ ... ossier.php
http://www.skinbag.net/skinbag-gb/code/pub.php
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Mark
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re: Odds and ends

Post by Mark » Sun Nov 19, 2006 10:46 pm

"The body of the robot is composed of a flexible polyurethane strip which has an array of Nitinolâ„¢ wires affixed on each side. The wire arrays are staggered along the body axis so that the most anterior and posterior wires do not overlap. This allows the body to flex at any point and for flexion waves to propagate. The rod and Nitinolâ„¢ array are encased in a molded rubber form. During preliminary testing we have determined that the cooling by a surrounding water or oil bath is adequate to permit rapid wire relaxation and undulations at up to 4 hz."
http://youtube.com/watch?v=7szcWCQLfgE
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Mark
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re: Odds and ends

Post by Mark » Mon Nov 20, 2006 12:01 am

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Mark
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re: Odds and ends

Post by Mark » Mon Nov 20, 2006 1:43 pm

The robot might have been funny with some sort of a horse costume fashioned over it, making it look fake.
Mark
http://youtube.com/watch?v=fp-XPOJM65I& ... ed&search=
http://www.fancypantsofbattle.co.uk/wp- ... rseWeb.jpg
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Mark
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re: Odds and ends

Post by Mark » Thu Nov 23, 2006 3:02 pm

I was just thinking about this philosophy, combining ideas to improve upon something. I have mentioned this topic before, the marriage of the bow and the pulley is a fairly new idea for example. How long they had both been around and how long it took for someone to combine them.
Maybe a new valved pulsejet could be out there somewhere.
Mark
"Due to the greater forces that a compound bow places on the arrow, wooden arrows intended for a recurve bow may break when fired from a compound bow, possibly driving the broken shaft into the archer's arm."
http://en.wikipedia.org/wiki/Compound_bow
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Mark
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re: Odds and ends

Post by Mark » Fri Nov 24, 2006 2:19 pm

Old news but perhaps one day it will give new meaning to radio-controlled pulsejets. Imagine starting your pulsejet this way. I guess you could set it up and at least do that today, that is, do a brainwave start. You could hold your hands out like you were conjuring it to start for effect, with a funny hat on your head. ha
"Researchers from the New York State Department Of Health have shown that it is possible to use brainwaves picked up by electrodes attached to the outside of the scalp to move a cursor around a computer screen. Previous efforts at monitoring brain waves through the scalp only allowed movement along one axis, like up and down."
http://tinyurl.com/yftwtu
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Mark
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re: Odds and ends

Post by Mark » Fri Nov 24, 2006 8:45 pm

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re: Odds and ends

Post by Mark » Wed Nov 29, 2006 2:45 am

Fancy toothbrushes.
Mark
http://www.blueflametech.com/
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tufty
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re: Odds and ends

Post by tufty » Wed Nov 29, 2006 10:08 am

Here's a big jamjar, sorta.

http://www.youtube.com/watch?v=hhTM12VB9To

Another, smaller, sorta

http://www.youtube.com/watch?v=lRne-8QHf-w

and a nice little one

http://www.youtube.com/watch?v=jB542-zdWyg

And - ummm - "fire in the hole" (Not safe for work)

http://www.youtube.com/watch?v=yMAs0niZzow

tufty
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re: Odds and ends

Post by tufty » Wed Nov 29, 2006 10:59 am


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