Oct 022014
 

The Allerton Park and Retreat Center in Monticello, IL was the site of the 2014 Antenna Applications Symposium.

Last week, I traveled to the Allerton Park and Retreat Center to present a new paper on fundamental electromagnetic physics at the 2014 Antenna Applications Symposium. My paper, “On Energy Flow in Standing Waves,” analyzes and explains the propagation of energy in a variety of standing waves. The conventional point of view in electromagnetics holds that near fields only matter close to sources, sinks, or scatterers of electromagnetic energy. I argue that near-fields arise whenever multiple electromagnetic waves interact. Although fields pass through each other, in so doing, the individual waves exchange energy with each other. These insights have helped Q-Track create better precision location systems, and may be helpful in making antennas work better in multipath environments. The standing wave perspective also has fascinating implications. The propagation of electromagnetic energy from source to destination follows, not ideal optical rays, but rather a complicated meander or drift as particular fields perturb the energy of the collective electromagnetic superposition one way or another. Also, it appears that although electromagnetic signals and fields propagate at the speed of light, electromagnetic energy only rarely propagates so quickly and instead ebbs and flows at a drift velocity less than the speed of light. The full text of my paper, “On Energy Flow in Standing Waves,” is available if you sign up on ResearchGate.net.

A video of my talk is also available.

 

The Heaviside Memorial Project recently completed the restoration of the memorial to Oliver Heaviside and his family in the Paignton Cemetary near Torquay, Devon.

The Heaviside Memorial Project successfully raised funds and completed the restoration of the memorial to Oliver Heaviside and his family in the Paignton Cemetary near Torquay, Devon. Details and additional photos of the unveiling ceremony are available at their web site.

The group, organized by the Newcastle Electromagnetics Interest Group and spearheaded by Christopher Spargo, is on to their next challenge. Their goal is to republish Searle’s 1950 biography of Heaviside. G.F.C. Searle (1864-1950) was a friend and professional colleague of Heaviside and shared many fascinating insights to Heaviside’s character and thinking in his posthumously published biography. The Heaviside Memorial Project is accepting donations to aid in the publication.

Update: A $50 donation now entitles you to a signed copy when available.

Jul 202014
 

Heaviside's barely legible monument tilts atop the family plot where he lies with his parents in Paignton Cemetary, Torquay, Devon, UK.

He developed the theory of transmission lines, coined such terms as inductance, impedance, and admittance, and rewrote James Clerk Maxwell’s awkwardly expressed equations into the vector form familiar to any student of electromagnetics. Today, Oliver Heaviside’s neglected tombstone is barely legible and is beginning to lean.

Chris Spargo and Professor Alex Yakolev aim to restore the monument, and they could use our help.

Founders of The Heaviside Memorial Project, the two have set up a website aiming to collect £800 in donations for the £660 repair and £140 for any unexpected costs. The restoration will relevel, clean, and repair the monument. Their campaign has already raised nearly half of the required funds. Please go to their website and donate what you can to this worthy cause.

Jul 162014
 

Yesterday, UWB pioneer Time Domain announced their acquisition by a private equity group led by Bonaventure Capital and Fidelis Capital. Time Domain did not disclose the terms of the transaction. Additional details are available in a statement from the company and in coverage from the Huntsville Times.

Jul 032014
 

I’ll be presenting my short course on UWB antennas at the IEEE Antennas and Propagation Symposium (APS) in Memphis, TN on Sunday July 6. This is the first time I’ve been back to IEEE APS since 2007, and my short course includes some interesting revisions from the second edition of my book, underway. Here’s a summary.

The wide scale commercial deployment of ultra-wideband (UWB) systems has led to increased interest in UWB antenna designs. In many cases, though, investigators have unknowingly resurrected already known designs rather than developing new ones. Also, the subtleties of UWB antenna physics and design are not always obvious to those more familiar with narrowband antennas. For instance, the spectral and impedance matching properties of a UWB antenna exert a profound influence on an overall UWB system design.

This workshop will enable attendees to:

  • Understand basic antenna physics as applied to UWB antennas
  • Quickly and correctly apply UWB antennas to current projects
  • Design and analyze UWB antennas
  • Integrate these antennas in an RF system
Jul 032014
 

Mark Brown (N4BCD) Participates in ARRL's Field Day.

One benefit of working at Q-Track is the opportunity to collaborate with talented people for whom  radio is a passion, not just a profession. This past weekend, my Q-Track colleague, Mark Brown [N4BCD], participated in the American Radio Relay League (ARRL) “Field Day.” The weekend-long exercise tests the ability of amateur radio operators to maintain communications in the event of an emergency like the tornadoes that struck Northern Alabama in 2011. Mark was featured in the footage from WHNT Channel 19.

 

 

 

 

 

 

Near-field wireless technology is an emerging area of great importance in Radio Frequency Identification (RFID). Specific applications include low frequency (LF) and high frequency (HF) RFID, Near-Field Communications (NFC), Near-Field Electromagnetic Ranging (NFER), and wireless power transfer. This talk discusses the origins of near-field wireless, surveys applications, presents near-field links laws, and reviews the properties and performance of electrically-small antennas. This March 31, 2014 presentation to the Huntsville, AL section of the IEEE previews the full three hour workshop presented April 8, 2014 at the 8th Annual IEEE International Conference on RFID held in conjunction with 2014 RFID Journal Live.

 A couple of misstatements I caught in reviewing this: first, Preece transmitted near field wireless signals across the Bristol Channel not the “British” Channel; and second, “unlike” links go as 40dB/decade, not 20dB/decade in the near-field. Prezi slides are available here: http://bit.ly/1x0FY7W if you’d like to take a closer look. In some of the views, you can’t see all the details.

 

 

James Clerk Maxwell (1831-1879) formalized a set of equations that describe the behavior and interaction of electricity and magnetism.

From Scientific Papers of James Clerk Maxwell, vol 2, LIV, p.311 (Proceedings of the Royal Institution of Great Britain, vol. VII, 1876). Emphasis added inn bold.

I HAVE no new discovery to bring before you this evening. I must ask you to go over very old ground, and to turn your attention to a question which has been raised again and again ever since men began to think. The question is that of the transmission of force. We see that two bodies at a distance from each other exert a mutual influence on each others’ motion. Does this mutual action depend on the existence of some third thing, some medium of communication, occupying the space between the bodies, or do the bodies act on each other immediately, without the intervention of anything else?The mode in which Faraday was accustomed to look at phenomena of this kind differs from that adopted by many other modem inquirers, and my special aim will be to enable you to place yourselves at Faraday’s point of view, and to point out the scientific value of that conception of lines of forcewhich, in his hands, became the key to the science of electricity.When we observe one body acting on another at a distance, before we assume that this action is direct and immediate, we generally inquire whether there is any material connection between the two bodies; and if we find strings, or rods, or mechanism of any kind, capable of accounting for the observed action between the bodies, we prefer to explain the action by means of these intermediate connections, rather than to admit the notion of direct action at a distance.Thus, when we ring a bell by means of a wire, the successive parts of the wire are first tightened and then moved, till at last the bell is rung at a distance by a process in which all the intermediate particles of the wire have taken part one after the other. We may ring a bell at a distance in other ways, as by forcing air into a long tube, at the other end of which is a cylinder with a piston which is made to fly out and strike the bell. We may also use a wire; but instead of pulling it, we may connect it at one end with a voltaic battery, and at the other with an electro-magnet, and thus ring the bell by electricity.

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May 202014
 

PBS Frontline offers a comprehensive and chilling account of the birth, growth, and evolution of the surveillance state. This is a must-see documentary that puts together all the pieces I only thought I understood from 9/11 to Edward Snowden’s leaks. Here’s Part 1. The second part airs this evening.

ATLOSCon is Coming!

 Posted by Hans at 05:12  No Responses »
May 192014
 

The 2014 Atlanta Objectivist Society Conference (ATLOSCon) is coming up over Memorial Day weekend. The annual event brings together over sixty attendees for an action-packed program of lectures, workshops, and activities. The fun kicks off the evening of Thursday May 22, and concludes Monday May 26. I’ll be presenting a talk on “Research in the Era of State Science,” and I’ll be posting more details later this week.

A full list of ATLOSCon course descriptions are here. The schedule is here.  Register here… Classes are already filling up. Unfortunately, the course list is not organized by topic area, but I’ve made an attempt below. Apologies in advance to any speakers whose courses I’ve mischaracterized.

Art

  • Parson Architecture: Recent Work by Earl Parson
  • How to Take Better Photos on Your Phone by Miranda Barzey
  • The Disease of Avant-Garde in Music: Its Symptoms, Etiology, and Prognosis by Aleksey Nikolsky
  • Music as a Language: The Natural Evolution of Emotional Communication by Andrew Zey
  • A Whirlwind Tour Through Beethoven’s Five Piano Concerti by Earl Parson

Rhetoric & Marketing

  • Improve Your Persuasiveness By Utilizing the “3 Languages of Politics” by Paul Hsieh
  • Marketing Research for Smarties: An Introduction to the Field of Marketing Research by Alisa Adamson
  • How to Be That Guy and Not That Other Guy (You Know the One) by Kelly Elmore
  • Avoiding Mount Stupid: Self-Discipline in Thinking and Persuasion by Andrew Dalton
  • Counterarguments: Not Just for Demolition by Kelly Elmore

Ethics & Epistemology

  • Confess Your Sins: The Moral Dangers of False Excuses by Diana Hsieh
  • Predation, Principles and Character by Kyle Haight
  • How We Went from Mind and Body to Whole People by Josh Job & Kelly Elmore
  • The Epistemological Spiral: Implications and Applications by Christian Wernstedt
  • Is There Any Value In That? by Neil Roeth
  • Objectivist Ethics by Aaron Bilger

Politics

  • Teaching Liberty in China by Robert Garmong
  • Traders are Winners ~ Kid Track ~ by Jenn Casey
  • Non-coercive Government and Free Riders by Aaron Bilger
  • The Liberty Amendments and the Convention of States by Kimberlee Thompson & Jacqueline Peterson
  • The Death of Privacy by  Josh Job

Science

  • Earth’s Climate – What Causes it to Change? by Ken Andrews
  • Research in the Era of State Science by Hans Schantz
  • The Science of Cooking by Zahra Sotoudeh
  • How The Heck Does an MRI Machine Work? by Paul Hsieh

Life Skills, Hobbies & Self-Improvement

  • Makers Class: Build a Siege Engine ~ Kid Track ~ by Amanda Vogel
  • Kettlebells for Fun and Profit by Jenn Casey
  • Improve Your Relationships Through The 5 Love Languages by Miranda Barzey
  • Makers Class: Build a Marble Roller Coaster ~ Kid Track ~ by  Amanda Vogel
  • Adult Swim Training and Technique with Coach Cynthia Roeth
  • Practical Open and Concealed Carry by David Sharpe
  • Introduction to Chess Principles by Chris Land
  • Executive Functioning: Critical Output Skills for Everyone (even Executives) by Amanda Vogel
  • Immunity to Change: How to Identify and Eliminate Self Sabotage by Kimberlee Thompson
  • Introduction to Theory of Constraints by Jenn Casey
  • The Research Behind Mindset: Wanna Hear About Kelly’s Dissertation? by Kelly Elmore
  • Applying a Growth Mindset by Amanda Vogel
  • Prepping: Not Just For The Crazy People Any More by  Kyle Haight, Anne Haight, Brendan Casey, and Ryan Moore
  • Bug Out Bags: What They Are, Why You Need One, and How to Make One by Ryan Moore
  • What I Wish I’d Known as a New Objectivist by Diana Hsieh
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