The “Electrified Flowers of Hawaii” project succeeded in raising more than twice it’s initial funding goal! Consequently I am now in Hawaii where, for the next month, I will be studying the floral biodiversity of the Big Island using a large format film camera and apparatus I built myself, including a lightning machine (a Marx generator) capable of producing intense pulses of electricity at up to a quarter million volts.
“Giddy” cannot begin to describe my feelings upon learning, on Thanksgiving, that I have been selected to be an Artist In Residence at Autodesk’s Pier-9 dream-lab in San-Francisco.
The concentration of brains, initiative, creativity, and capability in that space is stunning. In close approximation to Tony Stark’s workshop (from the movie Iron-Man) — a dream-shop with some of the most capable robotic fabrication equipment and tooling in existence including 3D printers, water-jets, lasers engravers powerful enough to work with metal, multi-axis milling machines, and more — it goes far beyond simple awesome tooling to be, from what I gather, a collegiate atmosphere where everyone is extraordinarily motivated to learn, make, and do things that push the limits of creativity, and in a context where the expected norm is to share and disseminate knowledge through the Instructables knowledge sharing website platform. Buzz Aldrin (Astronaut of Apollo XI moon-landing fame and the second person to walk on the moon after Neil Armstrong) was hanging out there testing a functioning magnetic repulsion hoverboard a few weeks ago, for instance. To be included in the cohort of selected artists for 2015 is a huge honor and inspires me to the grandest ambitions. Thank you, universe. Thank you, Noah. Thank you, Vanessa. Thank you, Mary. Thank you, Karen.
I’m fascinated with ephemeral phenomena, and the most recent manifestation of this has led me to invent some elaborate technical apparatus to make photographs of huge bubbles doing interesting things. Here are two videos of it working for the first time- the first with a series of close-up views of different components, the second as a wide-view of the whole system in operation.
Giant bubbles are uniquely able to engage and delight people of all types. Who can resist feeling wonder and awe at giant, floating, opalescent, undulating transparent orbs and the salience they give to normally invisible 3-dimensional flows? After my first experience blowing bubbles from a moving bicycle (the wind past the bicycle removes any requirement to blow or move the wand, you just adjust your speed to get the right wind), I was hooked.
I’ve organized a number of bubble blowing events, especially the “Bubbles on Bikes Jamboree Ride” for Bike Pittsburgh’s Bikefest and the first ever “Giant Bubbles Flash Mob”. For the latter, I manufactured 45 giant bubble wands, and about 25 gallons of giant bubble juice, and coordinated a synchronized release of ridiculously many insanely huge giant bubbles. Beyond the pre-arranged 45 bubble blowers, we had the fully invested attention and participation of somewhere between 300 and 500 people for several solid hours. All for about two days prep and maybe $200 in materials (including the pizza for the wand-making party). See the nicely polished video made by Ben Saks of Float Pictures here, or the great single-take cellphone video clip from Jason Kirin here.
For some things I’d like to do, I required a highly repeatable way of producing bubbles, and controlling aspects like timing and size and speed and direction. I also love a good engineering challenge, and so I invented a cable iris aperture mechanism and set out to use it to make a uniquely flexible and useful bubble machine. A CNC bubble machine.
There’s a few very sophisticated things I’d like to do with this which I’ll write about later, but for the first project I’m looking forward to making playful occupational portraits of some friends, mentors, and elders I feel lucky to know and learn from. I’m fortunate to have a few such in my life, in their sixties, seventies and eighties, and who in addition to great technical accomplishments, embody wonderful spirits of playfulness and creativity in their golden years that it’d be my pleasure to honor and record with such portraits.
Today I got the cables laced with a new, more robust-seeming cable than the cotton yarn I’d been using. I also plumbed up the fluid delivery needle valve and solenoid, so it’s ready to go.
I let the system cycle open and closed a few thousand times while I worked, once every second or two.
A hiccup occurred when the stepper motor was accidentally overdriven due to a mis-setting of the “run current” on the Vexta stepper driver. This overheated the motor and caused a motor fault, most likely a shorted coil. Thankfully I’ve got a bin of stepper motors from various past projects and all that’s required to fix it is to 3D print a new adapter cog, which links the new motors 0.233″ diameter shaft, to the existing bicycle sprocket gear. The old adapter was a 0.25″ diameter shaft. Thankfully, modifying the CAD file, exporting a new STL model, and 3-D printing a new pulley adapter requires only about 15 minutes of my time (with the print then occurring in the background for maybe 30 minutes). Wiring in the new motor (identifying the color code of the stepper’s wires and soldering it to the cable connector) will take perhaps 45 minutes.
The Human Scale is a gorgeous film about the ways in which the organization of our infrastructure shapes our lives. Much of the last 50 years has seen cities organized around cars, with tragic consequences for common spaces and face-to-face human interaction. The human scale documents some of the best efforts at bringing cities back to life as places for human, not automotive, interaction.
I am honored to get to introduce the film and, following the showing, moderate a panel discussion with notable figures from the mayor’s office of community development, the mayor’s office Bicycle/Pedestrian Coordinator, and Bike Pittsburgh.
The Human Scale shows at the Harris Theater downtown, 809 Liberty Avenue, on Thursday November 13th at 7:00 pm. Panel Discussion to follow. Tickets are $9, and can be bought online or in person.
Can you fathom what it must feel like to be one of the astronomers who, 45 years ago, discovered a comet, and is here today watching as we as a species are rendezvousing with that comet, gently landing a 200 pound Philae probe onto the surface, while we watch from the orbiting Rosetta spacecraft 19 miles above?
This is so humbling and inspiring to witness. Congratulations to everyone involved, especially the engineers which, by the various slingshot maneuvers, accelerated this spacecraft so deep into space on such a perfectly accurate trajectory to hit a bullseye hundreds of millions of miles away!!
Watch this amazing animation of the incredible 12 year long, half-a-billion-mile, bullseye we will see stick it’s landing here in less than one hour!!
Next step: make four of these with the tubing’s face to table’s face angles sampling intervals of 0, 22.5, 45, and 67.5 degrees (or generally, angle increments of ([0:(n-1)]/n) * (360/(number_of_tubing_facets_equals_4_if_square_tubing)) degrees rotation from flat. Make a jig to photograph them at consistent position, then make looping stop motion animation of toroidal ring rotating around it’s minor axis…
Then, perhaps, I will also incrementally crush each ring as I’ve done to destructively test prior similar experiments, and register each frame, so the animation might suggest continuation of the rotation throughout the increasing deformation.
I’ve been playing with a new process in which I remove the silvering of mirrors in detailed patterns, leaving optically clear glass.
My first experiment was to make a Zone Plate, but my current process didn’t have enough resolution to make fine enough lines for a zone plate of short focal length at normal visible wavelengths around 600nm:
However, the process is fantastic for barrier grid a.k.a. moiré a.k.a. ‘strip’ animations, and for an afternoon project this has borne incredible fruit: only about a dozen promising directions to go from here! I decided to focus first on making an animated cautionary text and moving image safety sign for vehicles, especially bicycles, especially helpful for night-time visibility.
The National Medal of Technology and Innovation (NMTI) is the nation’s highest honor for technological achievement, bestowed by the president of the United States on America’s leading innovators. The recipients for this year were announced by President Obama on friday, and my most esteemed friend and mentor Mary Shaw is one of them!
Mary Shaw is a gem. She is a fantastically interesting, diversely competent, engaging, and modest person who I befriended and formed an immense respect for while completely ignorant of her great eminence as Carnegie Mellon University’s Alan J Perlis University Professor of Computer Science (where she has taught since six years before I was born). As we met she was to me simply an engaging, creative, person who’d engage in conversations over a workbench, ‘soldering iron in hand’, on subjects spanning LED lighting, investment casting of custom metal drawer-pulls, glider piloting, glider construction, hot air balloon piloting, critical path analysis, vortex rings, bicycling, bicycle touring, bubble blowing mechanisms, bubble blowing while bicycle riding, tensegrity sculpture design, math, physics, engineering, relationships, photography… everything.
When I proposed organizing a group bicycle ride for Bike-Fest here in Pittsburgh, for which riders would be equipped with bubble blowing equipment to produce large numbers of bubbles in the air we moved through, she and her husband Roy enthusiastically participated on a tandem. They made the cover of the local paper, riding that tandem and blowing bubbles, during the Pedal Pittsburgh Ride.
Mary and her husband Roy, who I will occasionally assist as part of his Hot Air Balloon chase-van and recovery team (Mary is a pilot too, of rigid winged gliders), are a marvelous couple. They give a great model of what I imagine a happy seventh decade might best look like. They are frequently seen about Pittsburgh riding their tandem bicycle, or working together at Techshop. They ride the 330 mile Great Allegheny Passage bike path 330 miles between Pittsburgh and Washington DC every year, revising their trail guide and publishing trip reports which have proven very helpful to other riders. Their guide book is available for minimal cost, and their earlier trip reports can be found online.
I found out about this award today after just talking with her Monday – she did me the huge honor of recommending me to the Autodesk Pier 9 Artist Residency, which l have applied for – and didn’t even bring it up. Not that I’m one she’d brag to, but I think it’s representative of a quality I admire very much, of understated but immense competence.
CMU’s Shaw honored with National Medal of Technology and Innovation
Grey Iron and Ductile Iron Pipe are the dominant conveyances of water and sewage in American infrastructure. These types of iron have carbon and iron constituents whose relative distribution and crystal sizes determine their mechanical properties. Over time, this material are susceptible to ‘graphitization corrosion’ in which either graphite particles migrate and aggregate (typically at temperatures above 800F) or in which local electrochemical corrosion at room temperature results in preferential loss of the iron / ferrite constituent of the matrix. When this happens, the pipe becomes brittle, and mechanical insults like vibration or thermal stresses can exceed the flexibility of this now brittle material, leading to brittle failure and cracks. However, this corrosion can be invisible, because the remainder graphite particles are cohesive and the pipe appears physically unchanged.
During road work, construction, and maintenance operations, these pipes are visually inspected, but because pipes experiencing graphitization corrosion often look physically unchanged – the graphite material remains in the same contour as the original material, a method of detecting the change in properties of the pipe was needed which did not depend on visual changes, or subjective “bang on it with a hammer” subjective methodology, as was the state of the art previously. We needed a non-destructive method of detecting the changing properties of the pipe.
The insight of this patent is that the changing microstructure of the graphitized material has reduced magnetic properties due to the loss of iron. This could be sensed by measuring the magnetic permeability of the pipe, or it’s consequential magnetic measurements like inductance or the force developed within a fixed magnetic field. At the urging of my mentor Dr. Mehrooz Zamanzadeh, President and Principal Scientist of Matco Services, and with my assistant Sam, I developed a prototype sensor and confirmed that magnetic flux concentration, magnetic force, and inductance measurements are all viable methods of non-destructive detection of changed microstructure and ferrite loss in grey iron and ductile iron pipe. US Patent 8154279 was issued on April 10th 2012 for “Non-destructive testing apparatus for the detection of graphitization of iron”