Portable, collapsible model rocket launch pad.
By Stefan Jones
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Join the conversation - many MAKE articles have an online page that includes a place for discussion.
The Brain Machine -- Confused about leds
I'm just about finishing something similar. I'm using a msqeq7 (graphic equaliser) chip to ...
Sound Sucker -- From my dad..
(Posted for my father - who was having problems sending)
The tone pressure wave travels down the ...
Sound Sucker -- Very simple explanation.
More effective, as in covering a broader frequency range, but it would have less attenuation at any ...
Sound Sucker -- Very simple explanation.
This sound sucker will be more effective if the jello is cured with the mug at an angle....
Sound Sucker -- Very simple explanation.
Standing waves creating cancelling resonance.
http://en.wikipedia.org/wiki/Null_(physics)#Standin...
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