Thermal photography Applications Thermal imaging can be used to document heat/AC leaks from insulation gaps on a building's facade, reveal warmer ground water inflows (either fresh or chemical-laden) or "thermal pollution" from industrial processes entering ocean-temperature waterbodies, as well as identify areas on the human body experiencing infection or stress (includes epidemiological applications). Community applications so far include both a "heat-busters" program in East Harlem and a "forensic" water quality monitoring program in the Gowanus Canal. No, really, pi is wrong: The Tau Manifesto by Michael Hartl I continue to be impressed with how rich this subject is, and my understanding of π and τ continues to evolve. On Half Tau Day, 2012, I believed I identified exactly what is wrong with π. My argument hinged on an analysis of the surface area and volume of an n-dimensional sphere, which (as shown below) makes clear that π doesn’t have any fundamental geometric significance. My analysis was incomplete, though—a fact brought to my attention in a remarkable message from Tau Manifesto reader Jeff Cornell. As a result, this section is an attempt not only to definitively debunk π, but also to articulate the truth about τ, a truth that is deeper and subtler than I had imagined.
Electronics and Electrical Engineering Tools Calculate the required trace width for a specified current Inputs Trace Width Unit Trace Thickness Temperature Rise alice1101983 on eBay Based in China, alice1101983 has been an eBay member since Mar 05, 2012 Use this space to tell other eBay Members about yourself and what you’re passionate about. Give people more reasons to Follow you! 61,274Item as described 63,477Communication
Baldengineer's Review of NI's VirtualBench The first time I saw the VirtualBench from NI, I was amazed by its shear size—or lack of size. At the time, the unit I had access to an uncalibrated pre-release unit at the Austin TechShop. So I didn’t think it was fair to do a full review. Fast forward to today. Now that I’ve spent a week working with the VirtualBench I have some comments and thoughts. What follows is a review of this “All-In-One Instrument” that runs $1999 USD.
Photo ideas: soap bubble photography Follow this simple soap bubble photography project and learn how to shoot cool psychedlic macro photos. All the ideas and inspiration you need to get creative at home There’s so much more to macro photography than conventional photos of insects and flowers – and you don’t have to travel far to find something more creative to point your digital camera at If you’ve never tried it before, photographing the surface of soap film is a simple way to create close-up art – all in the comfort of your kitchen. The only problem is, the form and colour of soap film constantly change, which can seem challenging to capture with your camera at first. Follow this easy step-by-step guide, and you’ll be shooting psychedlic soap bubble pictures in no time…
ANSI PCB Track Width Calculator This is the NEW version of my calculator. The original version is HERE. New features in this version include: use of metric or imperial units for all major fields the ability to change units for any applicable field on the fly minor enhancements to some of the calculations - IPC-2221(A) changes the curve fit saving of all parameters in a cookie to keep your preferences between visits This page calculates approximations to the ANSI / IPC-2221/IPC-2221A design standards for PCB trace width - this is the replacement for IPC-D-275. The approximations and rationale are described in Temperature Rise in PCB Traces, equations 13 & 15. by Douglas Brooks, UltraCAD Design, Inc.
Bilderberg Group The Bilderberg Group, Bilderberg conference, Bilderberg meetings or Bilderberg Club is an annual private conference of approximately 120–150 political leaders and experts from industry, finance, academia and the media. About two thirds of the participants come from Europe and the rest from North America; one third from politics and government and the rest from other fields. §Origin The original conference was held at the Hotel de Bilderberg in Oosterbeek, Netherlands, from 29 to 31 May 1954. It was initiated by several people, including Polish politician-in-exile Józef Retinger, concerned about the growth of anti-Americanism in Western Europe, who proposed an international conference at which leaders from European countries and the United States would be brought together with the aim of promoting Atlanticism – better understanding between the cultures of the United States and Western Europe to foster co-operation on political, economic and defense issues.
The Adafruit Eagle Library What be in the Adafruit Eagle library hells yes its my very own mixtape of package footprints. Dont forget you can also grab parts out of any adafruit project's .brd file by running exp-project-lbr.ulp . However, since its nice to be tidy, I'll be merging everything into ONE FILE called the Ye Olde Adafruit Eagle Librarie, available at github Please note, this library is under serious construction, it'll be updated constantly with old parts files that must be copied in & cleaned up! Universal yoga - Andey Lappa’s Official site - Movements of arms To facilitate practical training, spiral movements of the arms are divided into four quarters. As was mentioned earlier, during the practice of horizontal movements, the palms should always be horizontal and face upward. In the first and third quarters, the fingers are turned outward (Photo 1 and 3), and inward in the second and fourth quarters (Photo 2 and 4). To further simplify the description of the technique of these movements, each of the quarters is assigned a relevant number: for the first quarter - 1, for the second quarter — 2, for the third quarter — 3 and for the fourth quarter — 4. The movements should first be learned separately with each hand, turning it in the same direction (the one which is easier for you) for several times without stopping. Then, it is possible to try to make the reverse rotation.
CMU EMS2, Fall 2012, Section C Ivan Sutherland MIT 1963 (Action starts at 4:20) These artists seemed to be fascinated by the apparent randomness (unpredictability) of these machines and let them “do their thing”. On the opposite side of the spectrum there is Sol LeWitt who didn’t use computers but conceived many of his works as a series of instructions. As if they were meant to be created by machines (art gallery interns). Many of these artists are still around but in the ‘90s computer art morphed into new media art and interactivity and social engagement became the main focus for artists working with technology.
The Processing Portfolio of Asher Salomon San Francisco Bay member since February 6, 2010 upload thumbnail No Ordinary Sand Particles have floating point location and momentum but the collision detection is done using quantized space sand. Grains which collide impart momentum in an elastic collision. Adding an On/Off switch to your Raspberry Pi - 楼里打扫 As most of you know by now, the Raspberry Pi is a fantastic little Linux box with many wonderful features. Over the last year and a bit that the Raspberry Pi has been out in the wild, users have discovered that this little computer can do almost anything – and without crippling your wallet! However, Raspberry Pi's very small price tag and form factor mean that the Rasp Pi has had to do without some of the home comforts normally found on a laptop or desktop computer – one of these comforts is a power-on and -off switch. The only safe way to shut down the Raspberry Pi is to do it manually using the graphical desktop interface – either with the LXDE power management window or by opening a terminal window and typing in a shutdown or reset command. Although an orderly shutdown is not a huge amount of work, it often gets overlooked or forgotten, and some users just pull out the microUSB power plug while the system is running. Reset Switch