January, Volume 53, Number 1
This Month’s Cover...
is called a laser soap fountain, combining a laser pointer, total internal reflection, and the Kaye effect to produce colorful parabolic arcs. See the article by T. Foley, M. Pegram, Z. Jenkins, B. C. Hester, and J. L. Burris beginning on p. 10.
February, Volume 53, Number 2
This Month’s Cover...
exhibits a fun image suggested by the amusingly titled “Platonic Relationships Among Resistors” by Bradley Allen and Tongtian Liu on page 75. The classical platonic solids are crafted from resistors and linked to each other by a single current carrying wire loop. Here’s a challenge question: which of the tetrahedron’s resistors will be the warmest in this circuit and which will be the coolest? Can you think of other challenge questions?
March, Volume 53, Number 3
This Month’s Cover...
is a stylized depiction of a scientist/detective scrutinizing the aftermath of a 2011 twoelectron, two-muon Higgs event for clues to help unravel the puzzles that have developed in the light of the discovery of the Higgs boson. See the related article by Don Lincoln,“The LHC’s Next Big Mystery” on p.140. ( Image courtesy of the ATLAS Experiment © 2014 CERN, and graphic designer
Jennifer R. Geanakos)
April, Volume 53, Number 4
This Month’s Cover...
exhibits resonance behavior via a humble scalp massager—see the article by Jair Lúcio Prader Ribeiro on page 245.
May, Volume 53, Number 5
This Month’s Cover...
uses polarized light to reveal hidden tensions in ice (see “Virtual Physics” on page 320).
January, Volume 52, Number 1
This Month’s Cover...represents the balance of “modern” and classical physics as expressed by about 450 TPT readers in a recent poll. (See editorial, p. 8.) The blue spheres in
free fall correspond to the topics to be omitted or curtailed from the traditional introductory physics sequence in order to make room for the four largest vibrantly colored
balls, topics most often selected by the survey respondents for inclusion.Two of the balls appear to have much greater density than the others – which two?
February, Volume 52, Number 2
This Month’s Cover...portrays a rainbow of light-emitting diodes (LEDs) atop a snippet of magnetic prose. See Planinšic and Etkina’s article on p. 94, “Light-Emitting Diodes: A
Hidden Treasure,” for a wealth of suggestions on ways to use LEDs in the classroom.
March, Volume 52, Number 3
This Month’s Cover...is a montage of images of physics and medicine including a modern staging of a doctor and patient preparing for a nuclear MRI scan, historical illustrations
from Harper’s Weekly and Frank Leslie’s Illustrated Newspaper depicting the attempt to detect the bullet that killed President Garfield, and a stage-prop “replication” of the
device used in this effort (oval inset). For a more authentic sense of this instrument, see the article on p. 137, Physics Almost Saved the President, by Overduin, Molloy, and
April, Volume 52, Number 4
This Month’s Cover...shows Canadian Eric Lamaze and his young mare, Derly, at the completion of the takeoff phase of a jump, in profile (and from the front on the screen above). See the article on page 202 by Art Stinner, “The Physics of Equestrian Show Jumping,” for some insights into the relevant kinematics and dynamics. (Photo courtesy, Franz Venhaus.)
May, Volume 52, Number 5
This Month’s Cover...is a jasmine flower and buds wrapped in a soap bubble from a photo taken by Zohe Beth Slack, a student of Valerie Risk’s at Albany High School in California. Gas, liquid, and solid intertwine here in a delicate balance to reveal concave mirror reflection and thin-film interference. Providing a meaty contrast to this floral tranquility is the article by Slisko et al. on p. 266, featuring surprising electrostatic deformations of liquid surfaces.
September, Volume 52, Number 6
This Month’s Cover...is a stunning photo by Reidar Hahn of the Cerro Tololo Inter-American Observatory (CTIO) in Chile, with the Milky Way as backdrop. Dark energy, whose mysteries CTIO is poised to unveil, is the topic of Don Lincoln’s and Brian Nord’s fascinating article on p. 337. See http://darkenergydetectives.org for updates from Nord about the Dark Energy Survey Collaboration and their work.
October, Volume 52, Number 7
This Month’s Cover...freezes a pumpkin-colored halo in the aftermath of an emphatic “hair flip.” Strands were coated with orange powder paint before the flip; afterward, smaller particles are suspended briefly, while larger particles fall to Earth. Hannah Nicole Hansen of Detroit Country Day School (teacher, Dan Berger) won Honorable Mention with “The Orange Wave” in the 2014 AAPT High School Physics Photo Contest (www.aapt.org/Programs/contests/winners.cfm?theyear=2014).
November, Volume 52, Number 8
This Month’s Cover...startlingly portrays the recent supermoon, with skeletal remnants of a 2003 wildfire in silhouette as captured by Gordon R. Gore, a retired physics teacher in Kamloops, British Columbia. For a fuller exploration of the Moon's orbital wanderings, see B. Oostra’s article “Introducing the Moon’s Orbital Eccen- tricty” beginning on p. 460.
December, Volume 52, Number 9
This Month’s Cover...showcases an almost implausible spiral of water against an impressively verdant Nepalese back-drop. When an elephant curls its trunk and then blows water out as it unfurls, this striking pattern appears and then disintegrates downward with a splash, as quickly as it formed. This winning entry from the 2014 AAPT H.S. Physics Photo Contest is by Bridget Park from Thomas Jefferson H.S. for Science and Technology, Alexandria, VA; teacher: Mark Harmon.
January, Volume 51, Number 1
This Month’s Cover...
Jukka O. Mattila's amusing article, "Reindeer Diode," appears on p. 12 of this issue.
February, Volume 51, Number 2
This Month’s Cover...Katrina Hay's paper beginning on p. 83 describes a physics course designed for students to learn about energy while traveling by train from Tacoma, WA, to
Los Angeles, CA.
March, Volume 51, Number 3
This Month’s Cover...This tree represents the current situation in dark matter. Several experimental observations are the root of the problem while the branches represent
possible solutions, including modifications of the theories of gravity and inertia, as well possible sources of unobserved mass. Don Lincoln’s paper on dark matter begins on p.
134 of the current issue. (Figure courtesy Stacy McGaugh.)
April, Volume 51, Number 4
This month's cover:includes a representation of the April 1963 inaugural cover of The Physics Teacher. See Steve Iona's paper beginning on p. 203 for one reader's thoughts and
observations on how the journal has evolved over the last 50 years.
May, Volume 51, Number 5
This Month’s Cover...David Kagan discusses the physics behind stealing bases in his paper beginning on p. 269 of this issue.
September, Volume 51, Number 6 This month’s cover combines both the cosmos and a multidimensional Calabi-Yau manifold. If our universe
contains dimensions beyond the familiar three, this will leave an indelible signature on the cosmos. The article by Don Lincoln beginning on p. 334 of this issue describes some
current searches for these possible extra dimensions.
October, Volume 51, Number 7
This month’s cover explores the aftermath of piercing a suspended water balloon. Michael Vollmer and Klaus-Peter Möllmann’s paper beginning on p. 400 of this issue discusses
several factors that govern the maximum size of water drops in nature.
November, Volume 51, Number 8
This month's cover shows a stylized rendition of a carbon nanotube cable for a space elevator. Zdenek Bochnícek’s article (p. 462) examines the plausibility of such a construct
on mechanical grounds and other considerations. (Carbon nanotube image by Chip Nyman, Nyman Digital Arts, © 2008 Karl G. Nyman, used with permission.)
December, Volume 51, Number 9
This Month’s Cover...The showy spiral aurora featured on this month’s cover is a close cousin to the helical electron trajectories highlighted in Thomas Greenslade’s “The Shapes
of Physics” on pp. 524–527 (photo by Nori Sakamoto, used with permission).
January, Volume 50, Number 1
This Month's cover is the frontispiece of Amagestum Novum, depicting Riccioli's assessment of the debate over whether the Earth moved. In his paper beginning on p. 8,
Christopher Graney discusses how he uses Riccioli's "wrong answers" to teach students about science. (Image courtesy of History of Science Collections, University of Oklahoma
February, Volume 50, Number 2
This Month’s Cover...In their paper beginning on p. 103, Ed van den Berg and coauthors describe a physics lesson on heating milk for cappuccino.
March, Volume 50, Number 3
This Month’s Cover...In this photo, water droplets are produced by dew condensing onto the fibers of a spider's web. There are relatively few droplets, and so the rainbow being
produced by the Sun's rays is not continuous. The picture was taken on the western shore of Yellowstone Lake just after sunrise by Tom Greenslade.
April, Volume 50, Number 4
This Month's cover...shows a view of a shot tower in Baltimore, MD, looking up from its base. The paper beginning on p. 218 of this issue discusses the physics behind how lead
shot was made in the 18th and 19th centuries. (Photo taken by Carl Mungan.)
May, Volume 50, Number 5
This Month’s Cover...In his paper beginning on p. 292, Xian-Sheng Cao describes a simple method for measuring the moment of inertia of a Ping-Pong ball.
September, Volume 50, Number 6
This month's cover...shows a particle collision recorded by the CERN Compact Muon Solenoid collaboration in which two photons were produced. Events like these are a powerful
probe in searches for the Higgs boson. The paper by Don Lincoln, beginning on p. 332, details this summer's exciting advance in our understanding of the physics of the Higgs
field. (Figure courtesy of CERN and the CMS Collaboration)
October, Volume 50, Number 7
This month's cover...This acoustic image was created by scanning yogurt bottles with a sound probe. Manfred Euler's paper beginning on p. 414 of this issue discusses how two-
dimensional acoustic mapping can be used in the physics classroom as an analogue to scanning tunneling microscopy.
November, Volume 50, Number 8
This month's cover... is the third place winner in the Contrived Category in AAPT’s 2012 High School Physics Photo Contest. Titled "Rose Drops," the photo was taken by Angela
Qiu of Lynbrook High School, San Jose, CA. Her teacher is Darryl Haywood. View the top 100 photos and winners at the AAPT website.
December, Volume 50, Number 9
This Month’s Cover...is a photo of the June 5, 2012, Transit of Venus as seen from Davidson, NC. The image was taken by Emmy Belloni, Nancy Bondurant, and Mario Belloni with an
iPhone, an iPhone adapter for afocal astrophotography, and a small telescope with a solar filter. Belloni’s paper beginning on p. 520 discusses the use of astrophotography in
the introductory astronomy class. (Cover design: Matthew Payne)