Ion Engine Based on a Tesla Coil

Couldn’t find a source for this, but the concept could be sound.

I’ve often wondered how difficult it would be to build a functioning T.I.E. fighter prototype, at least the T.I.E. (twin ion engine) part. Even a small toy, propelled with ion thrust, would be pretty cool. Looks like this guy figured it out:

His method uses a very simple coil and an external power supply. The simple coil doesn’t look as cool, but that’s because it’s not wasting energy on generating light.

I don’t have an answer for how to do this, but I feel there must be a way of getting minimal but measurable ion thrust with a contained power source. We can start by boosting the voltage from a 9v battery
(http://www.instructables.com/id/Make-an-Ultra-Simple-High-Voltage-Generator/Read the rest

DIY and the use of Plastic, UPVC and Perspex.

Source:
DIY Daddy

Excerpt:
“Nowadays the use of plastic in DIY and all jobs around the home is bigger than ever. Where metal, wood and other materials were previously the chosen material, it seems that the use of UPVC, plastic and perspex have taken over.This is my list of DIY jobs that now use the new materials, along with the benefits of doing so.The benefits of using plastic, UPVC or perspex are simple. They are low maintenance and last a lot longer than the more traditional materials. With wood or metal, they require painting on a regular basis. Yet that’s not the case with the new materials so here are a few examples of where you can use perspex, UPVC or plastic   1. If you … Read the rest

Lessons Learned from Designing an Escape Room

We’ve been hard at work polishing our portable escape room kit and have come up with a few tips for anyone trying to do the same thing.

#1: Febreze and ventilation

You want as much air flow as possible. When you have multiple people moving energetically in a small space, even the nicer-smelling ones will start to give off the aroma of human body. Air flow is your friend. Febreze is also your friend.

#2: Robust furniture

You don’t want to set up with grandma’s fine porcelain on display over the mantelpiece. Players will pick up and turn over and knock anything and everything they can while looking for clues. I’ve seen Ikea chairs completely dismantled. The corollary is that furniture and light fixtures that look … Read the rest

Poison Ivy

I sat at a picnic table. I think that must have been it. And a dog must have brushed against the legs of the table after walking through a patch of poison ivy. Because I never went near any vegetation other than grass, but within a day I had the typical blistering rash on the underside of my right forearm and the outside of my right knee.

I washed it and kept it dry and hoped it would go away quickly, but it didn’t. The rash kept spreading over the course of a week until it was all over both arms and both legs. I got some Tecnu and washed everything, but it didn’t help.

The medical literature says the urushiol (the irritating oil found in … Read the rest

Po’Daddy Siamese Sandwich

The flavors of southeast Asian cooking, notably dishes such as pad thai (“pad” just means noodles, so “pad thai” just means “Thai-style noodles”) can easily be replicated by combining chili sauce (sriracha in particular, less so the vinegar-heavy tabasco-style sauces in tex-mex cooking) and peanut butter. Add cabbage for texture.

Bread is your choice, but to evoke a banh mi, I’d use a crusty roll if available. Then, just slather in some PB, squirt in some chili sauce and stick a cabbage leaf in the middle. Cheap and above-mediocre… Read the rest

Po’Daddy Rice Cooker Mac and Cheese

In a rice cooker put:

  1. 1 cup dry pasta (elbows are usually cheapest, but shells or ziti or whatever is fine)
  2. 2 cups water
  3. 1 or 2 slices of american cheese. (I’m not a big fan of american cheese,but it melts better than any other kind and if you look at the ingredients, you’ll see that they’re not all garbage. The good kind is just melted colby cheese mixed with milk and then refrigerated. The bad kind has “corn solids” and oils and floor sweepings added.)

Turn it on. The pasta cooks in the water and the water boils away until there is so little left that the pot gets above 212°F (100°C), which signals the cooker to turn off. By then, the cheese is all … Read the rest

dvGreen

This is an idea I’ve heard suggested but had never seen anyone try to implement: environmentally-friendly events.

Most events are so wasteful (all those drink stirrers, those plastic cups and plates, and those conference lanyards, tote bags, etc.) that it seemed like an obvious idea.

From the site:

dvGreen designs sustainable events without sacrificing style. We show our clients that they can reduce their ecological footprint while still throwing a beautiful party – one that just happens to be Green. By featuring organic food, flowers, and table linens; tree-free paper invitations; donating or composting leftover food; purchasing carbon offsets, and more, dvGreen creates incredible events that you can be proud of forever.

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Frameworks Week 13

An ‘audio sketchbook’ – a non-book containing non-sketches, more of a ‘samplesite’

Frameworks for Interactive Sound

Spring, 2004

Jeff Feddersen

Obvert box, shake, return, select orientation, make sketch.

Initial Sketch


(Did not include radiating lines of fresnel lens)

Select aural metaphor for each visual detail.


Represent grid with kick drum

Represent walls with high hat

Represent both screws and half-walls (shown in blue) with hand clap

Represent sugar with snare (granular synthesis would have been too obvious)

Represent Marbles with TS404

Drum Machine snapshot

The hand claps are pitched enough that you can hear the difference.


I chose 90bpm so that it approximates a human heartbeat.

Rather than make 19×11 separate phrases, I chose to make 20 phrases,

Read the rest