In the field of Virtual Reality (VR) and Augmented Reality (AR), technologies have made huge progress during the last years and also reached the field of education. The virtuality continuum, ranging from pure virtuality on one side to the real world on the other, has been successfully covered by the use of immersive technologies like head-mounted displays, which allow one to embed virtual objects into the real surroundings, leading to a Mixed Reality (MR) experience. In such an environment, digital and real objects do not only coexist, but moreover are also able to interact with each other in real time. These concepts can be used to merge human perception of reality with digitally visualized sensor data, thereby making the invisible visible. As a first example, in this paper we introduce alongside the basic idea of this column an MR experiment in thermodynamics for a laboratory course for freshman students in physics or other science and engineering subjects that uses physical data from mobile devices for analyzing and displaying physical phenomena to students.

1.
D.
Schmalstieg
and
T.
Höllerer
,
Augmented Reality: Principles and Practice
(
Addison-Wesley Professional
,
2016
).
2.
C.
Sandor
,
M.
Fuchs
,
A.
Cassinelli
,
H.
Li
,
R. A.
Newcombe
,
G.
Yamamoto
, and
S. K.
Feiner
,
Breaking the barriers to true augmented reality
,”
CoRR
, abs/1512.05471 (
2015
).
3.
P.
Hockett
and
T.
Ingleby
, “
Augmented reality with HoloLens: Experiential architectures embedded in the real world
,”
CoRR
, abs/1610.04281 (
2016
).
4.
M. E. C.
Santos
,
A.
Chen
,
T.
Taketomi
,
G.
Yamamoto
,
J.
Miyazaki
, and
H.
Kato
, “
Augmented reality learning experiences: Survey of prototype design and evaluation
,”
IEEE Trans. Learn. Technol.
7
(
1
),
38
56
(
Jan.
2014
).
5.
J.
Kuhn
,
P.
Lukowicz
,
M.
Hirth
,
A.
Poxrucker
,
J.
Weppner
, and
J.
Younas
, “
gPhysics – Using smart glasses for head-centered, context-aware learning in physics experiments
,”
IEEE Trans. Learn. Technol.
9
(
4
),
304
317
(
2016
).
6.
P.
Milgram
and
F.
Kishino
, “
A taxonomy of mixed reality visual displays
,”
IEICE Trans. Info. Systems
77
(
12
),
1321
1329
(
1994
).
7.
J.
Kuhn
and
P.
Vogt
,
Diffraction experiments with infrared remote controls
,”
Phys. Teach.
50
,
118
(
Feb.
2012
).
8.
J. E.
Parrot
and
A. D.
Stuckes
,
Thermal Conductivity of Solids
(
Pion Limited
,
London
,
1975
).
9.
See additional online material for a derivation and more detailed discussion at TPT Online at http://dx.doi.org/10.1119/1.4999739 under the supplemental tab.
10.
The HoloLens does not actually use interference-based holograms but rather projections to the transparent head-mounted displays of the device. However, the term hologram is used by the manufacturer to describe these.
11.
M. L.
Crawford
, “
Teaching contextually: Research, rationale, and techniques for improving student motivation and achievement in mathematics and science
,”
CORD (CCI Publishing)
(
2001
); http://moveupct.org/assets/uploads/files/teachingcontextually.pdf.
12.
R. E.
Mayer
, editor.
The Cambridge Handbook of Multimedia Learning
(
Cambridge University Press
,
2010
).
13.
Project Be-greifen
, Technische Universität Kaiserslautern, https://www.physik.uni-kl.de/en/kuhn/forschungsprojekte/aktuelle-projekte/be-greifen/.
14.
The Microsoft HoloLens could be purchased for $3000 USD, https://www.microsoft.com/en-us/hololens/buy.

Supplementary Material

AAPT members receive access to The Physics Teacher and the American Journal of Physics as a member benefit. To learn more about this member benefit and becoming an AAPT member, visit the Joining AAPT page.