I’ve always been fascinated by fractals, especially the Sierpinski gasket, shown at right, and in a beautiful pyramidal arrangement in the background of this spread. To make such a gasket, all you do is remove the interior of the middle equilateral triangle (the upside down one) over and over again, at successively smaller and smaller scales. What results is something that is more than one dimensional, but less than two dimensional—in fact, it can be shown to have dimension D, where D is given by the relation 2D=3, or D ≈ 1.585…. In this issue of TPT, we feature on page 410 a paper by Charles Creffield, “Fractals on a Benchtop: Observing Fractal Dimension in a Resistor Network,” where he details how his students set up resistors in a similar network and mimic fractal resistance effects … doubly fascinating! I wanted to share this imagery with you in appreciation of the hundreds of generous, smart, and gracious individuals who serve as TPT referees. When I look over this list of names, I see many of the people I admire most in the world, and it makes me optimistic in a way that few things can these days. If you see someone you know in this list, please find a way to express your thanks for all they do for TPT and for physics teachers and students everywhere. When I imagine all the connections between the people on this list, it calls to my mind all of the connections between the dark regions in the figure at right—a Sierpinski gasket of physicists, held together by their common ideas. What could be more fun to think about!? Thank you, again, dear referees; you are the glue that holds this community together, in my view.
I’ve always been fascinated by fractals, especially the Sierpinski gasket, shown at right, and in a beautiful pyramidal arrangement in the background of this spread. To make such a gasket, all you do is remove the interior of the middle equilateral triangle (the upside down one) over and over again, at successively smaller and smaller scales. What results is something that is more than one dimensional, but less than two dimensional—in fact, it can be shown to have dimension D, where D is given by the relation 2D=3, or D ≈ 1.585…. In this issue of TPT, we feature on page 410 a paper by Charles Creffield, “Fractals on a Benchtop: Observing Fractal Dimension in a Resistor Network,” where he details how his students set up resistors in a similar network and mimic fractal resistance effects … doubly fascinating! I wanted to share this imagery with you in appreciation of the hundreds of generous, smart, and gracious individuals who serve as TPT referees. When I look over this list of names, I see many of the people I admire most in the world, and it makes me optimistic in a way that few things can these days. If you see someone you know in this list, please find a way to express your thanks for all they do for TPT and for physics teachers and students everywhere. When I imagine all the connections between the people on this list, it calls to my mind all of the connections between the dark regions in the figure at right—a Sierpinski gasket of physicists, held together by their common ideas. What could be more fun to think about!? Thank you, again, dear referees; you are the glue that holds this community together, in my view.
David S. Abbott
Paulo H. Acioli
Andrei Afanasev
Adel Alameh
Bradley Allen
Joseph C. Amato
Bradley Ambrose
Barbara Andereck
Eric Anderson
Stuart Anderson
Andrés Aragoneses
Seth Ashman
Timothy James Atherton
Leslie Atkins Elliott
Robert Andreas Austin
Eric Ayars
Shahrul Kadri Ayop
Antonio Badia-Majos
Janelle M. Bailey
William H. Baird
Blane Baker
Jorge Luis Ballester
Richard P. Barber
Mauricio Barbi
Bree Barnett Dreyfuss
Regina Barrier
Igor Barsukov
William Bassichis
Alan Bates
Sebastian Becker
Ernest R. Behringer
Joanna Behrman
Fred Behroozi
Michael Scott Bell
Keith Bellof
Gregory A. Benesh
Jonathan Bennett
Tom Bensky
Sean J. Bentley
Rhoda Berenson
Calvin Berggren
Keith Berland
Oscar Bertran
Ugo Besson
Shayak Bhattacharjee
Gábor Bihari
Philippe M. Binder
Steven Binz
Ignacio Birriel
Jennifer J. Birriel
David Bittel
Philip Rodriguez Blanco
Jake Stanley Bobowski
Abigail Bogdan
Roeland Boot
Daniel Borrero-
Echeverry
Derrick Ernest Boucher
Andrew Boudreaux
Jonathan Bougie
Forrest R. Bradbury
Michael Braunstein
Bob Brazzle
Michael S. Briggs
Christine Caragianis Broadbridge
Joel Bryan
Louis Buchholtz
Mark Buesing
Andy Buffler
James Buick
John B. Buncher
Alex Burant
Juan R. Burciaga
Jan-Philipp Burde
Adam Burgasser
Eric W. Burkholder
Teresa Burns
Andrea Bussani
Robert R. Cadmus
Tony Calamai
Kristine Callan
Sara Callori
Jared Phelps Canright
Isidora Caprile
Richard L. Cardenas
Duncan Carlsmith
Bradley W. Carroll
Ryan Carroll
Ashley Carter
Thomas Carter
Paulo Simeão Carvalho
Fausto Casaburo
Giovanni Casini
Dan Caton
Craig Caylor
Phillip Cervantes
Jeff Chamberlain
Sayan Chandra
Amtul Mujeeb Chaudry
Alex Chediak
Mary K. Chessey
Christopher J. Chiaverina
Siu A. Chin
Jacquelyn J. Chini
Cory W. Christenson
Wolfgang Christian
Christopher Frank Chyba
Xabier Cid Vidal
Jim Braun Clarage
Shannon Clardy
Hunter G. Close
Geraldine Cochran
Ricardo Coelho
Giuseppe Colicchia
Charles Collett
Eva-Maria Collins
Neil Francis Comins
Tom Concannon
Cristiano M. B. Cordeiro
Sean M. Cordry
Christian Corrao
Ivan F. Costa
Laurent Courbin
Charles Creffield
Rod Cross
Frederico Alan de Oliveira Cruz
Michele D’Anna
Brian D’Urso
Robert Dalling
Ann Daniel
Marta L. Dark
James Day
Roberto De Luca
Elida De Obaldia
William DeGraffenreid
Christos Deligkaris
Glenda Denicolo
Mark Denny
Matthew Dew
Alan DeWeerd
Eric R. Dietz
Gregory A. DiLisi
Lin Ding
Jennifer Docktor
William Halsted Donahue
Darsa Donelan
David Donnelly
Lucio Strazzabosco Dorneles
Remy Dou
Danny Doucette
Benjamin William Dreyfus
David Joel Drosdoff
Michael Dubson
Scott C. Dudley
John Dumar
Marcelo Dumas Hahn
David H. Dunlap
Leos Dvorak
Joshua Dyer
Don Easton
Eric M. Edlund
Ira Mark Egdall
Mark Eichenlaub
Arthur Eisenkraft
Andrew R. Elby
Marshall Ellenstein
Paul Emigh
Jeffrey Emmert
Paula Vetter Engelhardt
Lars Q. English
Francisco Esquembre
Eugenia Etkina
Benjamin Evans
Cathy Mariotti Ezrailson
Carol Fabby
Hasan Fakhruddin
Charles M. Falco
Kathleen Falconer
Daniel Farias
David A. Faux
Klebert Feitosa
Bernard Feldman
Gerald Feldman
Richard Fitzpatrick
Kurtis A. Fletcher
Eduardo V. Flores
Kenneth W. Ford
Lewis L. Ford
Theodore Foster
Michael Fowler
Claudia Fracchiolla
Joel Franklin
Scott Franklin
Walter Freeman
James K. Freericks
Marc Frodyma
Josh Fuchs
Christopher Fuse
Gonzalo Fuster
David G. Haase
Calin Galeriu
Michael R. Gallis
Ross Galloway
Cynthia Galovich
Enrique J. Galvez
Punit Gandhi
Peter Garik
Wayne P. Garver
Andrew Gavrin
Julio Gea-Banacloche
Alina Gearba-Sell
Bradley Gearhart
Benjamin D. Geller
Elizabeth A. George
Thomas F. George
Tim Gfroerer
Edw S. Ginsberg
Alexander Goessling
John Eric Goff
Ersin Gogus
Jesse Goldman
Andres Gomberoff
Anura Goonewardene
Chris Gosling
Noah Graham
Christopher M. Graney
Thomas B. Greenslade Jr.
Bor Gregorcic
David Griffiths
Jeffrey R. Groff
Joshua Grossman
Ildefonso Guilaran
Ross Gunderson
Siming Guo
Matthew Warren Guthrie
William W. Hackborn
George Hademenos
Kenneth D. Hahn
Thomas Hall
Ari Hämäläinen
Paul C. Hamerski
David Hammer
Benedikt Harrer
Nathan Harshman
Francis X. Hart
Beverly Hartline
Brian David Hartman
J. E. Hasbun
Elvedin Hasovic
John Michael Hauptman
Eric Hazlett
Eugene Hecht
André Heck
Jack G. Hehn
Thomas Hemmick
Rachel Henderson
Andrzej Herczynski
Rhett B. Herman
Jessica Hernandez
David Herrick
Paul Hess
Paul Hewitt
James Hicks
Melissa Hicks
Robert C. Hilborn
Eric Hill
Don Hillger
Peter F. Hinrichsen
Andrew S. Hirsch
Robert Hobbs
David Hobill
Barbara Maria Hoeling
N. G. Holmes
Judy Hopp
Art Hovey
Daniel Howard
John A. Howell
Ruth H. Howes
Leonardo Hsu
Ifan Glyndwr Hughes
Michael M. Hull
Andrew Theodore Hyman
S. S. R. Inbanathan
Paul William Irving
Joshua Isaacson
David P. Jackson
Ewald Janssens
John W. Jewett Jr.
Dyan Jones
William Francis Junkin
Taylor Kaar
Petr Kácovský
David Kagan
Michael Kagan
Calvin S. Kalman
Martin J. Kamela
Stephen E. Kanim
Sebastian Kapp
Andreas Kaps
Ricardo Karam
Dileep Karanth
Oleg Kargaltsev
David Owen Kashinski
Richard Dana Kaufman
Savinder Kaur
Philip Keller
Eric Kincanon
Evelyn Kinzel
Michaela Kleinert
Kathleen Koenig
Patrick B. Kohl
Gerd Kortemeyer
Andrzej Kotlicki
Minjoon Kouh
Joseph F. Kozminski
Richard Joseph Krantz
Dennis Krause
Joel David Krehbiel
Mila Kryjevskaia
Dennis E. Kuhl
Jochen Kuhn
Bethany Cobb Kung
Douglas A. Kurtze
Mickey Kutzner
Munho Kwon
Shawn Laatsch
Celso Luis Ladera
William Brian Lane
Amanda Lannan
Daniel Laumann
Christopher Martin Lavelle
Timothy M. Lawlor
Gabriel Le Doudic
Armand Le Noxaïc
Kaelyn Leake
Louis Leblond
Kevin Lee
Paul Lee
Scott Lee
Harvey S. Leff
Susan Y. Lehman
Don S. Lemons
Bryan Leonard
Zachary H. Levine
Bruce W. Liby
Jerome Licini
Martin Lieberherr
Michael Liebl
Martha Lietz
Christopher Like
Hong Lin
Don Lincoln
James Lincoln
Trevor C. Lipscombe
Joshua Littleton
Fabrizio Logiurato
Vjera Lopac
Dany Lopez
Diana Berenice Lopez Tavares
Michael C. LoPresto
Ian Lovatt
Matt Lowry
Milentije Lukovic
Dan MacIsaac
Jill A. Macko
Ponn Maheswar- anathan
Mohamed Anis Maize
John Mallinckrodt
A. James Mallmann
Kathy Malone
Karl C. Mamola
Harry Manos
Daniel Keith Marble
Arturo Carlos Marti
Brian Martin
Jeffrey D. Marx
Bruce A. Mason
Mark F. Masters
Mark E. Mattson
Leon Nathaniel Maurer
Shannon K. Mayer
Krista K. McBride
Lowell McCann
Michael Paul McCaughey
Steve McCauley
Stacy McCormack- Hootman
Michael McCracken
James Mcdonald
Gordon McIntosh
David H. McIntyre
James G. McLean
Daryl McPadden
Steven Mellema
David Elliott Meltzer
Avraham Merzel
Donna Messina
James Robert Metz
Chad A. Middleton
Pavlos Mihas
Kelly Miller
Kurtz K. Miller
John A. Milsom
Leonid Minkin
Brandon J. Mitchell
Pitam Mitra
Mary Mogge
Pirooz Mohazzabi
Michael J. Moloney
David Montalvo
Martín Monteiro
Nathan Moore
Thomas A. Moore
Thomas R. Moore
Andrew C. H. Morrison
Robert A. Morse
Brad Moser
Saeed Mosh- feghyeganeh
Antonio Angel Moya
Rainer Mueller
Donna Mullenax
Carl Edward Mungan
Thomas Murphy Jr.
Clifton Murray
Jaclyn Kuspiel Murray
Paul Nachman
Hiroko Nakahara
Christopher Naka- mura
Paul Andrew Nakroshis
Alan M. Nathan
Jane and Jim Nelson
William M. Nelson
Dwight E. Neuenschwander
Wendy Nielsen
Timothy Niiler
Jayson Micheal Nissen
Hideo Nitta
Paul Nord
Daniel Joseph O’Brien
Wolfgang Oehme
Yasuo Ogawara
Hans Ohanian
Ryan Olf
Keith Oliver
Alice Olmstead
Thomas Olsen
Alexis Olsho
Donald W. Olson
Fatih Önder
Kelly O’Shea
James Overduin
Mark Paetkau
Wyatt Page
William D. Parker
Beth Parks
Jay M. Pasachoff
Shirish Rajan Pathare
Michael Paukov
Nelson Wilbur Pech- May
Ann-Marie Pendrill
Germano Maioli Penello
Kerstin Perez
Jonathan Perry
Kenneth A. Pestka II
Randy Peterson
Sarah Phan-Budd
Unofre Balug Pili
A. I. Pinchuk
Johanna Pirker
Suwan Plaipichit
Gorazd Planinšič
Nicolas Plihon
Thomas Plotz
Robert Polak
Nikola Poljak
Christopher Porter
Gesche Pospiech
Richard H. Price
Chokchai Puttharugsa
Jeff Radtke
Katherine Rainey
V. V. Raman
Everett Ramer
Gordon Ramsey
A. R. P. Rau
James Reardon
Jose Arnaldo Redinz
Mark E. Reeves
Gary Reich
Daniel L. Reinholz
Andrew Resnick
Williams Jonata Miranda Ribeiro
Arlisa Richardson
Derek Richardson
Amy D. Robertson
David Robertson
Alma Robinson
Andrew Robinson
Juan Rodriguez
Roberto Rojas
Alberto G. Rojo
Mark F. Roll
Chris Rorres
Katemari Rosa
David Rosengrant
Tommaso Rosi
Bradley J. Roth
Bahram Roughani
Barbara Rovšek
Arunava Roy
Armando Rua
Scott Rubin
Marianna Ruggerio
Michael J. Ruiz
Mark Rupright
James C. Sanders
Justin M. Sanders
Wayne Mark Saslow
Vashti Sawtelle
Lee Sawyer
Erin Scanlon
Beth Ann Schaefer
Britt Scharringhausen
Kent Scheller
Rachel E. Scherr
Axel Schmidt
Daniel V. Schroeder
Tina Schulze
Daniel Schumayer
Brian Schwartz
Alan Scott
Carolyn Sealfon
David Sederberg
Lane H. Seeley
Matthew Richard Semak
Bradley A. Shadwick
Said Shakerin
Asif Shakur
John Shaw
Peter Sheldon
Bruce Sherwood
Steve Shropshire
Kendra Sibbernsen
David Lee Sidebottom
Peter B. Siegel
Daniel Edward Sikes
Arnold E. Sikkema
Donald Eugene Simanek
Chandralekha Singh
Vandana Singh
Douglas Alexander Singleton
Chris Sirola
Jonathan R. Skuza
William V. Slaton
Jan Slegr
Kyle Slinker
David P. Smith
Donald A. Smith
Emma Smith
Trevor I. Smith
Winthrop W. Smith
David R. Sokoloff
Andrzej Sokolowski
Mark Somers
Patricia Soto
Kevork Spartalian
Geoff Spedding
Benjamin T. Spike
Amy VanEngen Spivey
Sebastian Staacks
Frank Stallmach
Jared Stang
Cecilia Stari
Michael Lee Steib
Keith Stein
Leo C. Stein
Tim Stelzer
MacKenzie Richard Stetzer
John Charles Stewart
Dale Stille
Steve Stonebraker
Jefferson Streepey
William Mark Stuckey
David Sturm
Isaiah Sumner
Wenqing Sun
M. Qasim Syed
Randall Tagg
Rex Taibu
Bernard Tan
Mark P. Taylor
Richelle Teeling- Smith
Raluca Elena Teodorescu
Florian Theilmann
Marshall Thomsen
Todd K. Timberlake
Roger G. Tobin
Nathan Tompkins
Daniel G. Tonn
Daniela Topasna
Kenneth W. Trantham
Adrienne Traxler
Joseph Jude Trout
Karl Patrick Trout
Stephen Bradford Turcotte
Yau-Jong Twu
Malte S. Ubben
Bret Underwood
Trai Unyapoti
Andreas Valadakis
Ed van den Berg
Alexander van der Horst
Ben Van Dusen
Stephen Van Hook
Jean-Francois Simon Van Huele
Paul van Kampen
Kurt Vandervoort
Joshua Veazey
Ann M. Viano
Rebecca E.Vieyra
Artur Batista Vilar
Abraham Vilchis
Dwight Vincent
Renante Violanda
Epifanio Guido Virga
Chris Vuille
Shannon Wachowski
Kasey Wagoner
Farooq Wahab
Wojciech J. Walecki
Jearl D. Walker
John R. Walkup
Colin Scott Wallace
C. Wesley Walter
Paul J. Walter
Yong Wang
Bianca Watzka
Kris Wedding Crowell
William M. Wehrbein
Jennifer Weinberg- Wolf
Gary J. Weisel
James Wells
Brian Welsch
Andrea Jayne Welsh
Mark Welter
Chris Wentworth
Chris West
Kyle White
Susan White
Brooke A. Whitworth
Surawut Wicharn
Carl Wieman
Richard J. Wiener
Matthew Wiesner
Bethany R. Wilcox
Darren M. Williams
Jeremiah D. Williams
Karen Williams
Quinton L. Williams
Shannon D. Willoughby
Marcus Wilson
David C. Wirth
Salome Woerner
Steven Frederick Wolf
Richard Wolfson
Michael Herbert Wood
Monika Wood
Deonna Woolard
Rand S. Worland
C. H. Wörner
Huiling Xu
Chuck Yeung
Dylan Yost
Chadwick Young
Douglas T. Young
Jessica Patricia Conry Young
Kenneth Young
Robert C. Youngquist
Anthony Zable
Katherine Zaunbrecher
Nicolle Zellner
Liang Zeng
Keith Zengel
Alfonso Zerwekh
Michael Ziese
Dean A. Zollman
Alma C. Zook
Kristina Zuza
John Zwart
