Recommends a full research on the different urban locations and situations in which the citizen may want to intervene. Any physical or intellectual risk produced by such interventions will be on each citizen account.
Tom sent in this letter to Physics Today, he used an atomic clocks to show his kids they’d get an extra 22 nanosecond from relativistic time dilation… I’m a little skeptical since the difference would be super tiny, but have a gander - it’s pretty neat -
I enjoyed Daniel Kleppner’s Reference Frame about the relativistic effects of elevation on precise clocks (PHYSICS TODAY, March 2006, page 10). He would be amused with an experiment I did with my kids last year.
The year 2005 was the widely publicized 100th anniversary of Einstein’s first paper on relativity and the lesser-known 50th anniversary of Louis Essen’s first cesium clock. To celebrate, I created Project GREAT (General Relativity Einstein/Essen Anniversary Test), perhaps the first “kitchen science” relativity experiment.
As a collector of vintage and modern atomic clocks, I discovered it was possible, using gear found at home, to convert our family minivan into a mobile high-precision time laboratory, complete with batteries, power converters, time interval counters, three children, and three cesium clocks (see photograph). We drove as high as we could up Mount Rainier, the volcano near Seattle, Washington, and parked there for two days. The trip was continuously logged with the global positioning system; the net altitude gain was +1340 meters.
in relative time-keeping - Physics Today March 2007 - [via] Link.
Related:
Project GREAT - General Relativity Einstein / Essen Anniversary Test - 3 kids, 3 cesium clocks, a family road trip to measure relativistic time dilation - Link.
Since this is blinky ALERT LEVEL RED week, we’re giving everyone a special treat from the pages of CRAFT - Here’s how to make an LED shirt, you could make just about design and pattern, you know like an Aqua Teen Hunger Force LED Ignignokt Mooninite. In fact, if you make one and you’re the first, we’ll give something awesome from the Maker store!
We know that by adding just a ‘lil bit of simple technology to your sewing skills, it will be worth in the end when your lighting up the streets with your cool wares. Featured in CRAFT: 01 was the “The Electric Tank Top” where you can make a fashionable tank with any pattern you wish.
Fashion designer Diana Eng has a tutorial up on Gizmodo with a close up view of how to sew LEDs into your clothing. Link.
Designer Syuzi Pakhchyan of Sparklab taught one of the top workshops at our Maker Faire last year on how to make her Wearable Light Bracelet. Here’s the PDF of her project so you can make one for yourself. Link.
Extensive turorial and explanation guide on how to de-interlace video. From Divx to your DV camcorder, it’s all covered. What is deinterlacing? How does it happen? How can it be avoided? Tons of examples.
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